vmware interview questions

VMWare interview questions

1 What versions of ESX Server you have knowledgemdashESX 40 amp ESXi 40

2 What versions of Virtualcenter server you have knowledge ndash vCenter Server40

3 Roles and responsibilities on VMware mdashTaking care of 3 ESX Servers 66 VMs

amp 1 vCenter Server -= Veeam Monitor 50 versionmdashVDR 12- Managing virtual

infrastructure through vSphere client 40 amp taking care of iSCSI SAN -

4 Explain about your VMware environment No of ESX Servers No of VM in each

ESX Server What features are used How are they connected to storage

5 What is the maximum no of virtual machines can be created on a Single ESX

Server with high end configuration -- Max-320

6 ESX server supports how many processors ndash 512 vCPUs per host

7 ESX server supports what capacity of RAM -- 1 TB

8 How many processors can be allocated to VM ndash 8 vCPU

9 How many NICs can be allocated to VM - 10

10What is the maximum RAM can be allocated to VM 256 GB

11What files are associated with VM ---

12What is Service Console

13What is VMKernal

14How many networks will be installed by default in ESX Server

15Which network is used for storage purpose

16How many virtual switches can be created in ESX Server

17When I try to power on VM it is displaying error message Canrsquot map memory

for VM Cannot allocate memory What are the reasons for the same

a When there is no free space in VMkernal SWAP File on the VMFS file

system Increase the VMkernal SWAP file to atleast physical RAM Size

18How can you check the Physical NICrsquos in service console

19How can you format VMFS file system in Service console

20How to clone a VM in Service console without Virtual Center 1

21What is a cold migrate

22What is a storage vmotion

23What happens to Virtaul Machines when one server in HA cluster goes down

24What happens to Virtual machines when one server in DRS cluster goes down

25Can we establish a cluster with different processor

26Explain technical functionality of Vmotion

27Explain technical functionality of HA Cluster

28In cluster if Virtual center goes down what happens

29What is the port no of Virtual Center server

30Which Webserver will be used by Virtual Center server

31How can you verify the physical Ethernet adaptors using Service console

32What do you mean by Paravirtualization

33How do you create Resource pools

34What is the difference between Limit amp Reservation in Resource pools

35What is the use of Shares

36What is difference between available memory and Reservation

37What is role as a Vmware administrator

38What kind of activities will be performed on a daily basis in ESX Server

39Explain about your environment ( How many esx servers configuration of esx

servers how many virtual machines storage)

40How do extent datastores

41Can we attach 4 TB Partition as VMFS filesystem

42What is the use of promiscuous mode in Traffic shaping

43What traffic shaping policies are available

44Which daemon in ESX server is responsible for authenticating

45Which daemon in ESX Server is responsible for responding to Virtual Center

46What is the maximum no of ESX Servers can be added to Virtual center 2

47What happens to virtual center if you change the password of root account in ESX Server

48What will you do if OS Gets corrupted in VM

49How do you troubleshoot the Guest Os in VM

50How do you troubleshoot ESX Server

51How do you power on VM in Service console

52Where do you configure SMTP Server

53What is the default traffic routing settings

54What is the recent Patch name amp number released by VMware for ESX Server

and Virtual Center

55What is VCB amp explain technical functionality of VCB

56How do you configure ISCSI storage devices

57How does VLAN amp Port groups differ

58What settings should be done in Physical switch if All VLAN information should

be exposed to ESX Server

59If huge number of Virtual machines to be deployed then how do you do this

60If you want to roll back changes in VM then what will you do

61How do you restore backup of a VM

62How do you verify the version of ESX Server from service console and as well in

VI Client

63How do you get the list of VM running in Service console

64How do you get resource usage information from service console

65Where does the VM log files stored

66Can I use schedule tasks in VI Client connected to ESX host

67What is the difference between volume based migration and disk based

migration

68 how do you configure logical volumes in linux

69 How do you parse commands to Redhat kernel 3

70 What boot modes available in Redhat

71 what tools did u use for p2v

72 What versions of p2v used for migration

73 What do u mean by hot cloning and cold cloning

74 Is it possible to do hot cloning for linux box

75 What errors you faced during p2v take few cases and explain and how did u resolve

76 What steps you will take to resolve kernel panic error in ESX

77 How do you approach to resolve Linux boot problems after migration from physical server

78 How do you resolve blue screen errors after migration from physical server and which case it

throws a blue screen

79 How many servers did you do p2v How did you plan

80 How do you configure NTP settings amp how do you verify it is working fine or not

81How to list the patches installed in ESX Server

82 Which command is used to check the ESX updates and install

83 What are the disadvantages of Vmotion

84 Compare Hyper-v with ESX Server

85 How do you stop migration of VM to different esx server in DRS Cluster

Q1) Are we able to add odd number virtual CPUs to our virtual machines for example 3 or 5 VCPU as

compared to VI3 version when virtual SMP only supports 2 or 4 VCPU per virtual machine

Yes we can now add odd number VCPU to our virtual machines

4

Q2) What is the limitation for configuring VMware Fault Tolerance for a virtual machine

Virtual machine selected for VMware FT must be provisioned with thick disk and not thin disk if it was provisioned

with thin disk there will be a prompt to inflate the existing disk size

Q3) What is the disadvantage of configuring VM direct path IO for a virtual machine

If we configured VM direct path IO the virtual machine gains significant performance improvement as it is provided

direct access through the adapter however it loses its virtualization features and the adapter cannot be used by other

virtual machines

Q4) Does vSphere provide support for the currently version of VMware Site Recovery Manage version

10

vSphere has does not support SRM version 10 at this present moment

Q5) What is the benefit of using a Distributed vSwitch as compared to a Standard vSwitch

With a distributed virtual switch the network statistics and policies of the virtual machine that has been vmotion to

another ESX Server will migrate with the VM This provides the ability for network vmotion and is useful for

implementing inline intrusion detection systems and firewalls

Q6) Does ESX 4 and ESXi 4 support jumbo frames and TSO

Yes both ESX 4 and ESXi 4 provides support for jumbo frames as well as TSO these can now be configured in the

GUI as compared to VI3 where administrators could only do it via command lines

Q7) What is the different between VMware Data Protection as compared to the traditional VMware

Consolidated Backup

VMware Data Protection supports all storage architecture for backup and restore via LAN and SAN It also supports

full incremental and differential file level backup options

Q8) What is the key driving factor for users adopting VMware vCenter Data Recovery

Its an API that runs in a virtual machine within your vCenter it provides agentless backup and can backup virtual

machines even when they are being vmotion to a different host

Q9) Can we perform Storage Vmotion now via the GUI inside vCenter

Yes Storage Vmotion feature is now avaliable in the vSphere Client connected to vCenter Server It provides full

support for FC SAN and NFS

Q10) When using vCenter Linked Mode feature what are the functions that could be shared among the

vCenters in this link

vCenter Linked Mode allows administrator to centrally manage all the vCenter within a single view roles and licenses

can be shared across the vCenters configured in a link

Q11) Do I still require a Flexnet License Server if all my ESX Servers are ESX 4 and ESXi 4

No you no longer require a license server for the to manage the new ESX Servers All licenses are managed within the

vCenter Server

5

Q12) If my customer has a hybrid environment where they still have ESX 3 and ESX 35 can vCenter

communicate with the existing Flexnet License Server

Yes vCenter can communicate with existing license servers so as to allow it to manage legacy ESX Servers vCenter

will pull the licenses for legacy hosts from the flexnet license server

Q13) Why am I unable to hot add CPU and memory to virtual machine

You are required to enable this function under the virtual machine settings in order to use it Therefore it is advisable

to enable it before you start your virtual machine for the very first time

Q14) Is it true we can now use the new VMware Update Manager to upgrade our legacy ESX Servers

(For example ESX 35) to ESX 40 version

Yes the new VUM has the ability to upgrade your legacy ESX Server hosts for you However if you are upgrading a

standalone host you will be required to power off all virtual machines running on that host

Q15) How come we are unable to use our existing VI Client to manage our ESX 4 and vCenter 4

No the legacy VI Client is unable to manage newer ESX Server Hosts and vCenter You will need to install vSphere

Client to manage newer ESX Server Hosts and vCenter as well as legacy ESX Hosts

Q16) In vSphere can we configure bidirectional CHAP authentication for iSCSI

Yes we can now configure bidirectional CHAP authenticaton for iSCSI software It is fully supported Previously we

could only configure unidirectional CHAP authentication

Q17) Do we still need to configure a Service Console port for iSCSI initiator

No we no longer need a Service Console for software iSCSI initator The vmkiscsid no longer runs in the Service

Console There have been improvements made to the new iSCSI stack in the kernel and also with the use of TCPIP2

which has multi threading capabilities

Q18) What is the maximum number of CPU and maximum amount of memory a virtual machine can

scale

In vSphere a virtual machine can now be configure with a maximum of 8 virtual CPUs and 255 GB of memory

Q19) What is the maximum amount of logical CPUs and memory per ESX Server 4 host can scale

ESX Server 4 now supports a maximum of 64 logical CPUs and 1 TB of memory

Q20) What actions allow us to configure thin disk provisioning for a virtual machine

When we create a new virtual machine clone an existing virtual machine clone a template or perform Storage

Vmotion on an existing virtual machine

Q21) What is the benefit of configuring thin disk provisioning as compared to thick disk provisioning

for a virtual machine

When we configure thin disk provisioning the virtual machine only uses the space that it requires and not the entire

disk size this allows the remaining unused space for other virtual machines This enables us to do Storage Overcommitment

and use the storage more efficiently

6

Q22) Will my virtual machines still have connection if the virtual center that stores my Distributed

vSwitch configuration goes down

Yes this is because the Distributed vSwitch has an control plane which sits at the vCenter Server level and an IO

plane which are the form of hidden vSwitches sitting at the ESX level Therefore even if the vCenter goes down

virtual machines continue to have connectivity through the IO plane at the ESX level

Q23) What is the maximum number of ESX Hosts we can connect to a single distributed switch

We can connect up to 64 ESX hosts per distributed switch and vCenter 4 can support up a maximum of 16 distributed

switches Which means we can have up to 1024 hosts on these 16 distributed switches Refer to Configure

Maximums for more details

Q24) What is the version of the 64 bit Service Console running in ESX 4

The Service Console is a 26 linux kernel compatible with Red Hat Enterprise Linux 52 or CentOS 52 version

Q25) What is the maximum number of uplinks or ports per ESX 4 or ESXi 4 Host

The maximum number of uplinks per ESX 4 or ESXi 4 Host is 32 uplinks Refer to Configure Maximums for more

details

Q26) Can we install vCenter Server on a 64 bit Windows OS

Yes vCenter Server can be installed on both 32-bit and 64-bit Windows OS Refer to Compatibility matrix for more

details

Q27) Does ESXESXi 4 supports round robin multipathing policy

Yes besides fixed (preferred) and most recently used (MRU) ESXESXi 4 now supports round robin multipathing

policy and it has to be configured on the storage level

Q28) Can vCenter 4 support a cluster which includes ESX 3x and ESX 4 hosts

Yes we can cluster legacy ESX 3x hosts and ESX 4 hosts together in the same cluster vCenter will have to connect to

the flexnet license server to manage the licenses for the legacy hosts However new features such as hot add and PCI

pass through may not be avaliable to the VMs on legacy hosts Refer to Upgrade Guide for more details

Q29) When upgrading from virtual center 2x to vCenter 4 is there downtime for the host and do we

need to re add the ESX hosts back into the inventory

No theres no time for the hosts and existing hosts will remain in the inventory However there will be downtime for

virtual center Remember to backup the databases as during the upgrade process the database schemas are changed

and in the event of a upgrade failure you will not be able to roll back and you will have to do a restore Refer to

Upgrade Guide for more details

Q30) When we hot add memory to a powered on VM will the swap file get dynamically increased

When we hot add memory to a powered on VM the swap file size will get dynamically increase

Q31) When we hot add memory to a powered on VM and the swap file get dynamically increased what

happens if there is not enough disk space to meet the growing vswap file size

7

You will not be able to add memory to that VM that has not enough memory for the swap file to grow and you will

receive an error

Q32) Can we add USB controllers to our VM in ESXESXi 4

Yes we now have the ability to hot plug USB controller into our VMs while they are running However the usb device

has to be connected to the ESX Server and not the client local machine

Q33) When installing convertor plug-in I get a 404 error and the installation halts

During installation of vCenter Convertor you will have to enter the FQDN instead of the IP address or netbios name as

this may cause you to receive the 404 error when installing the vCenter convertor plug-in later

Q34) Where is Distributed Power Management configured and what are the protocols it uses

DPM is configured and managed at the DRS cluster level It uses IPMI ILO and Wake On LAN protocols DRS can

use DPM to put under utilized hosts into standby modes to save power consumption

Q35) What is new with vCenter 4 user access and role management as compared to the virtual center

25

vCenter 4 allows us the ability to assign administrators to inventory objects such as networks and datastores which

were not available with the previous virtual center version

Q36) What are the new tasks we can schedule in vCenter 4 task scheduler

vCenter 4 task scheduler allows us the ability to schedule a task to increase the resources in a resource pool or

virtual machine This would be good to cater to the needs of virtual machines that will require additional ad-hoc

resources such as finance department doing month end closing which may result in resources surge on their

machines

Q37) How does VMware HA on an ESXi Server sends out heart beat if ESXi does not have a service

console

VMware HA clusters configured for ESXi Servers uses the vmkernel present on all ESXi Servers to send and receive

heart beats Whereas on ESX Servers the heartbeat is send and receive through the service console Therefore we

may not want to cluster ESX and ESXi Servers together in the same cluster

Q38) Can we create a cluster with ESX and ESXi Servers

Yes However VMware HA may not work as both servers uses different port groups to send out heart beats Vmotion

and DRS may still work This is not a supported practise




Q40) How can I grow an existing VMFS LUN without creating an extent or physical partition

We can use the grow function to grow an existing VMFS LUN If the LUN is out of space first we must get the storage

administrator to grow the same LUN on the storage level with storage array management utilities then within the

8

vCenter Server we can then select the LUN and grow it

Q41) How come the hot add CPU and hot add memory option is greyed out for my VM

This feature is currently available only on supported guest OS such as Windows Server 2003 enterprise and Windows

2008 datacenter edition The type of license also plays a part on the availability of this feature to the VM

Q42) What does the channel number stands for in vmhbaTCL

The only real example that Ive seen in vSphere so far is the software iSCSI initiator If you give the VMkernel

multiple VMkernel ports and each port can reach (over its own subnet) different targets they are listed with different

channel numbers to indicate whether they use the first VMkernel port the second or the third

Q43) Can we install VMware Consolidated Backup VCB in a virtual machine

Yes VCB can now be installed in a VM and it can be use to backup VMs running on iSCSI and NFS However if you

wish to backup VMs whose files reside on an FC San LUN VCB must be installed on a physical machine

Q44) Does VMware View 3 work with VMware vSphere 4

No currently VMware View 3 is only supported on VI 35 infrastructure and it is not supported to work with vSphere

4 environment

Q45) Is the Service Console root file system still running on ext3 file system

No the SC root file system is now running on VMDK and this is automatically created during initial installation of

ESX Servers

Q46) Is it possible to configure VMware Update Manager 4 to point to WSUS to grab windows updates

No this is not possible as the VUM Server is unable to communicate with the WSUS Server

Q47) Can vCenter 4 perform Storage Vmotion on a legacy ESX 3x Host and convert the VM virtual disk

from thick to thin disk

Yes vCenter 4 is able to convert a VMs virtual disk from thick to thin using storage vmotion Refer to this ESX 3x

and vCenter 4 SVmotion for more detail discussion

Q48) I understand that Oracle databases licensed by per CPU how does that translate to the number of

license I have to purchase if I port it over to VM

In order for you to run your Oracle DB within a VM on that ESX Server you have to purchase license for each physical

CPU on that ESX Server box Refer to this Oracle Licensing Per Processor for more detail discussion

Q49) How come there is no standalone boot CD for VMware Convertor 40 for me to download for use

for cold cloning

VMware vCenter Converter Standalone 401 does not support cold cloning you must use an earlier Converter edition

boot CD 30x Enterprise Edition Refer to this VMware Convertor User Guide for more information

Q50) When we convert a VM from thin disk to thick disk which state must the VM be in to perform the

request

9

The VM must be in the powered off state in order to be converted from thin to thick disk

Q51) What is the default multipathing policy for ESX 4

The hypervisor determines whether to use MRU or Fixed based on the type of arrays it detects If array is

activepassive it would be treated as MRU If array is activeactive it would be treated as fixed Refer to Multipathing

Policies in ESX 4 for more details

Q52) What is the difference between Enhanced vmxnet and vmxnet3

Vmxnet3 is an improved version of enhanced vmxnet some benefits and improvements are MSIMSI-X support Side

Scaling checksum and TCP Segmentation Offloading (TSO) over IPv6 off-loading and Large TXRX ring sizes

Refer to Vmxnet3 tips and tricks for more details

Q53) When we replicate the LUNs over resignaturing only occurs for VMFS LUNs and not RDM how do

we get the replicated RDM to work

You can replicate the RDM to a new array but the mapping file that is configured on the vm itself will no longer be

pointing to the same location it was previously so the RDM has to be re-mapped to the VM in a DR scenario

Q54) After installing plug-in inside the VC I am unable to enable the plug-in and it always shows as

disabled

Go to servicesmsc ensure that the Virtual Center Management Webservices is running and then relogin the vSphere

Client and enable the plug-in

Q55) What is the difference between ephemeral and dynamic binding on a distributed virtual switch

Ephemeral a new port on every power-on The port is destroyed when the VM disconnects from the port Dynamic

assign a port when the VM is powered on it uses a concept similar to DHCP in that if the same port is available then

it will renew that one Refer to Networking Deep Dive for more details

Q56) What is the difference between a thick virtual disk and eager zeroed thick virtual disk

Thick virtual disk does not format the VMDK at the time of deployment This means that data which needs to be

written must pause while the blocks required to store the data are zeroed out An eager zeroed thick virtual disk

actually formats all of its data blocks at the time of deployment

Q57) What kind of permissions do we need to provide when configuring a NAS Server

We need to configure permission for the administrator group account rights on the NAS Server so that the ESX Server

can access the NAS Server

Q58) Storage View tabs in the SAN storage datastore is blank and does not show anything

Start the vCenter Mount Service and virtual disk service then restart the vCenter Server service on the Windows OS

Then click on refresh for the storage view tabs

Q59) Can we migrate VMs running on ESX host with VMware Hardware Version 7 to ESX host with VMware Hardware Version 4

No we cannot migrate VMs running on hardware version 7 back to hardware version 4 VMware hardware version 7

10)only exists on ESX4 and greater However it is possible to migrate VMs running on ESX host with hardware version 4

to ESX host running on hardware version 7

Q60) Does VMware have an online page where we can search for all the technical white papers

Yes Please kindly refer to Technical Resource Center for more information

Q61) Does VCB supports Windows Server 2008

VCB version 15 supports Windows Server 2008 Refer to VCB 15 Update 1 release notes for more information

11VMware_Interview_Questionsdoc

NOTE I dont know answers to some of the questions in the doc so if anyone of you aware of the

answer for any particular question please send me an email with the question and answer I will

update it in the doc Email charanisupportyounet

1 Explain the physical topology of Virtual Infrastructure 3 Data Centre

a typical VMware Infrastructure data center consists of basic physical building blocks such as x86

computing servers storage networks and arrays IP networks a management server and desktop

clients

2 How do you configure Clusters Hosts and Resource Pools in VI3

A cluster is a group of servers working together closely as a single server to provide high availability

load balancing and high performance A host is a single x86 computing server with individual computing

and memory resources Resource pools are allocation of the available resources in to pieces for the

proper distribution

3 What are resource pools amp whatrsquos the advantage of implementing them

A VMware ESX Resource pool is a pool of CPU and memory resources Inside the pool resources are

allocated based on the CPU and memory shares that are defined This pool can have associated access

control and permissions Clear management of resources to the virtual machines

4 Explain why VMware ESX Server is preferred over Virtual Server or Workstation for

enterprise implementation

For better resource management as it has a virtualization layer involved in its kernel which

communicates with the hardware directly

5 In what different scenarios or methods can you manage a VI3

Using the Virtual Infrastructure Client we can manage one esx server using virtual center we can

manage more than 1 esx server and also we can use service console to manage it

httpsearchvmwaretechtargetcomtip0289483sid179_gci1280576_mem100html

6 Explain the difference between access through Virtual Infrastructure Client (vi client) Web

access Service Console access(ssh)

Using VI Client we can access the ESX server as well as Virtual Center Server also here we can use

unix type of authentication or windows type authentication But to access the service console we should

use unix type of authentication preferably even though we can access the service console through ad

authentication using esxcfg-auth but it does not support all functions to work on all the functions are

available only with root account which is based on red hat Linux kernel Using the web access also we

can manage virtual center as well as a single host But all the enterprise features are not supported

Console access to the Service Console

The disadvantages to this mode are

you must be at the console (or connect using an IP KVM) and

you must know Linux to accomplish your task (no GUI)

SSH to the Service Console

You can SSH to the console prompt of an ESX server and receive the same Linux text

console access as I showed above Telnet is not allowed To use this method the ESX

server must be working on the network and you must have an SSH client on your PC to

connect Again in this mode you dont get a GUI interface

VMware Virtual Infrastructure (VI) Web Access to the ESX Server

This is the VMware VI Web Access interface The benefit to using this is that you get a GUI

client for your ESX server without having to install a client on your local machine The

VMware_Interview_Questionsdoc httpsdocsgooglecomdocumentpubid=1xpi2Mg3iiZ3IqkhOP5BwiG

1 of 10 232012 713 AM

downside to the web interface is that you can only perform basic ESX functions like

controlling existing machines (startstoppause) and console remote access You cannot

add new VMs work with VM storage or VM networks Still this is a great interface if you

just need to check the status of your ESX VMs restart a VM or use console remote control

VMware Virtual Infrastructure Client (VI Client) to the Server

The benefits to the VI client are that you have full access to do whatever is needed on the

ESX Server and you get a GUI client to do it in The only downside is that you must install

the VI client application to do this However the installation is negligible and the VI client

is the absolute best way to administer your ESX Server

VMware Virtual Infrastructure Client (VI Client) to the Virtual Center Server (VC Server)

From this VI VC interface you can manage all ESX servers VM storage VM networks and more

Virtual Center of course is an optional product that requires additional licenses and hardware

7 Explain advantages or features of VMware Virtual Machine File System (VMFS)

Itrsquos a clustered file system excellent support for sharing between ESX servers in a cluster

Features

Allows access by multiple ESX Servers at the same time by implementing per-file locking SCSI

Reservations are only implemented when LUN meta data is updated (eg file name change file size

change etc)

Add or delete an ESX Server from a VMware VMFS volume without disrupting other ESX Server hosts

LVM allows for adaptive block sizing and addressing for growing files allows you to increase a VMFS

volume on the fly (by spanning multiple VMFS volumes)

With ESXESXi4 VMFS volumes also can be expanded using LUN expansion

Optimize your virtual machine IO with adjustable volume disk file and block sizes

Recover virtual machines faster and more reliably in the event of server failure with Distributed

journaling

Limitations

Can be shared with up to 32 ESX Servers

Can support LUNs with max size of 2TB and a max VMFS size of 64 TB as of version 4 (vSphere)

There is a VMFS-3 limitation where each tree of linked clones can only be run on 8 ESX servers For

instance if there is a tree of disks off the same base disk with 40 leaf nodes in the tree all 40 leaf

nodes can be simultaneously run but they can only run on up to 8 ESX hosts

VMFS-3 limits files to 262144 (2

18

) blocks which translates to 256 GB for 1 MB block sizes (the

default) up to 2 TB for 8 MB block sizes

8 What are the types of data stores supported in ESX35

iSCSI datastores FC SAN datastores Local VMFS NAS and NFS

9 How can you configure these different types of datastores on ESX35

If we have FC cards installed on the esx servers by going to the storage option we can scan for the

luns

10What is Vmware Consolidate Backup (VCB) Explain your work exposure in this area

VMware Consolidated Backup is a backup framework which enables 3

rd

party tools to take backups

VCB is used to help you backup your VMware ESX virtual servers Essentially VCB is a backup proxy

server It is not backup software If you use VCB you still need backup software It is commonly

installed on its own dedicated Windows physical server

Here are the benefits of VMwares VCB

Centralize backups of VMware ESX Virtual Servers

Provide file-level backups of VMware ESX Virtual Servers - both full and incremental (file level

backup available to only Windows guests)


2 of 10 232012 713 AM

Provide image-level backups

Prevent you from having to load a backup agent on every Virtual Machine

Prevent you from having to shutdown Virtual Machines to get a backup

Provides LAN-Free backup because the VCB server is connected to the SAN through your fibre

channel adaptor

Provides centralized storage of Virtual Server backups on the VCB server that is then moved to

your backup tapes through the 3rd party backup agent you install

Reduces the load on the VMware ESX servers by not having to load a 3rd party backup agent on

either the VMware ESX service console or on each virtual machine

Utilizes VMware Snapshots

Basically here is how VCB works

If you are doing a file level backup VCB does a snapshot of the VM mounts the snapshot and

allows you to backup that mounted drive through VCB to your 3rd party backup software

If you are doing an image level backup of the VM VCB does a snapshot of the VM copies the

snapshot to the VCB server unsnaps the VM and allows you to backup the copied snapshot

image with your 3rd party backup software

11 How do you configure VMware Virtual Centre Management Server for HA amp DRS What

are the conditions to be satisfied for this setup

HA amp DRS are the properties of a Cluster A Cluster can be created only when more than one host

added in that case we need to configure HA amp DRS as well to provide High Availability and Load

balancing between hosts and for the virtual machines

12Explain your work related to below terms

VM Provisioning Virtual Machine Creation

Alarms amp Event Management Alarms are used to know the status of the resource usage for a VM

Events are used monitor the tasks that are taken place on the esx servers or in the virtual center

Task Scheduler Task scheduler if you want to schedule a task it will be used for example if you want

move one vm from one host to another host or if you want shutdownreboot a vm etc

Hardware Compatibility List what are the hardware that compatible with ESX OS

13What SAN or NAS boxes have you configured VMware with How did you do that

Storage team will provide the LUN information with that we will add those LUNs to ESX hosts from VM

storage

14What kind of applications or setups you have on you Virtual Machines

Exchange server and Share Point but these are for DEMO purposes Cirtrix presentation servers etc

15 Have you ever faced ESX server crashing and Virtual Centre Server crash How do you

know the cause of these crashes in these cases

Please send me the answer if anyone knows about this I will update the doc

charanisupportyounet

16 Will HA work if Virtual Center Server is down

A1) HA continues to work if VC is down - the agents are initially configured by virtual center but HA

operations are controlled by local agents on ESX VC does NOT monitor the ESX servers for HA ESX

servers monitor each other

DRS do not work while VC is down

A2) For DRS the config and logic is completely in VC

For HA only the config is in VC The logic is in the service consoles and thats where the reaction is

coming from VC will notice the HA reaction afterwards when it connects to the service consoles the next

time

No Why because all these futures are comes with Virtual Center only

17 What are the situations which triggers vMotion automatically

Resource Contention between virtual machines (DRS)

Distributed power management


3 of 10 232012 713 AM



18 What is DRSHADPMdvSwitchFTvAppsvSafevShields -)

DRS Distributed Resource Scheduling

HA High Availability

DPM Distributed Power Management

dvSwitch Distribute vSwitch ndash Itrsquos a new feature introduced in vSphere40

FT Fault Tolerance for Virtual Machines ndash itrsquos a new feature introduced in vSphere40

vApps vApp is a container same as resource pool but it is having some features of virtual machines a

vApp can be powered on or powered off and it can be cloned too

httpcommunitiesvmwarecommessage13084571308457

vmSafe VMsafes application programming interfaces are designed to help third-party vendors create

virtualization security products that better secure VMware ESX vShield Zones is a security tool targets

the VMware administrator

vShield VShield Zones is essentially a virtual firewall designed to protect VMs and analyze virtual

network traffic This three-part series describes vShield Zones explains how to install it and provides

useful management tips To begin lets get started with the basics what vShield Zones is and how it

works


19 What are the requirement for FT

httpcommunitiesvmwarecomthread209955

20 What are the differences between ESX and ESXi

ESX is an OS with full features of virtualization ESXi is a limited features OS with 32MB image

21 Which are the new features introduced in vSphere 4

1 64-bit hypervisor - Although not everyone realized it the hypervisor in ESX Server 35 was 32-bit

As a result ESX Server 35 couldnt take full advantage of todays more powerful 64-bit hardware

platforms ESX Server 40 uses a native 64-bit hypervisor that provides significant performance and

scalability enhancements over the previous versions However the new hypervisor does require a 64-bit

hardware platform

2 Increased VM scalability - ESX Server 40s new 64-bit architecture provides significant increases

in scalability ESX Server 40 supports virtual machines (VMs) with up to 255GB of RAM per VM In

addition the vSphere 40 Enterprise Plus edition provides support for up to 8-way virtual SMP per VM

The other editions support up to 4-way virtual SMP These gains are available on both Windows and

Linux guests

3 Hot add CPU RAM and virtual disks - This important enhancement in vSphere 40 is designed to

create a dynamic IT infrastructure through the ability to add CPU RAM and virtual disks to a running

VM The hot add capability lets you dynamically increase your VMs performance during periods of high

resource demands

4 Thin provisioning - This feature is nothing new to Microsoft virtualization users vSphere now

offers a thin-provisioning feature thats essentially the equivalent of Hyper-Vs dynamic disks Thin

provisioning lets you create and provision a Virtual Hard Disk (VHD) but the host uses only the amount

of storage thats actually required by the VM rather than using the VHDs allocated size

5 VMware Fault Tolerance - Fault Tolerance is a new high-availability feature in vSphere 40 Fault

Tolerance works only between two systems It uses a technology called vLockstep to provide protection

from system failure with absolutely no downtime VMwares vLockstep technology keeps the RAM and

the virtual processors of two VMs in sync at the instruction level

6 vNetwork Distributed SwitchmdashvSphere 40s vNetwork Distributed Switch lets you create and

share network configurations between multiple servers The vNetwork Distributed Switch spans multiple

ESX Server hosts letting you configure and manage virtual networks at the cluster level It also lets

you move network configuration and state with a VM when the VM is live migrated between ESX Server

hosts

7 IPv6 support - Another enhancement in vSphere 40 is support for IPv6 Many organizations are

planning to move to IPv6 vSpheres IPv6 support lets customers manage vCenter Server and ESX

Server hosts in mixed IPv4IPv6 network environments

8 vAppsmdashvApps essentially lets you manage as a single entity multiple servers that comprise an

n-tiered application Using vApps you can combine multiple VMs their interdependencies and their

resource allocations together as a unit You can manage all the components of the vApps as a single

unit letting you power off clone and deploy all the vApps components in the same operations


4 of 10 232012 713 AM

9 vSphere Host Update UtilitymdashThe new vSphere Host Update Utility lets you centrally update your

ESXi and ESX Server 30 and later hosts to ESX Server 40 The UI displays the status of the remote

updates in real time

10 VMware vShield ZonesmdashVMwares new vShield Zones let customers enforce network access

protection between VMs running in the virtual data center The vShield Zones feature lets you isolate

bridge and firewall traffic across vCenter deployments

22 Which are the traffic shaping options available to configure

23 What is promiscuous mode

If the promiscuous mode is enabled for a switch the traffic sent that switch will be visible to all vmrsquos

connected to that switch I mean the data will be broadcasted

24 What makes iSCSI and FC diffrent

Addressing Scheme iSCSI relies on IP and FC not and the type of transfer of data also In FC the data

transferred as blocks in iSCSI the data transferred as files The cabling also FC uses Fibre cable and

iSCSI uses RJ45

25 What is the format for iSCSI addressing

IP Address

26 VMs Task Manager shows performance normal But vCenter reports high resource

utilization what is the reason

Search KEY WORDS VMs performance normal vCenter reports high resource utilization


27 What are the different types of memory management tricks available under ESX

httpenwordpresscomtagesx-memory-management

httpwwwcsnorthwesternedu~fabianbclassescs-443-s05ESXpps

28 What is vmmemctl

httppubsvmwarecomvi3resmgmtwwhelpwwhimplcommonhtmlwwhelphtmcontext=resmgmtamp

file=vc_advanced_mgmt1124html

29 How we can list pNICs amp status using command line

ifconfig ndasha

30 What is resource pool What are the use of it

A resource pool is a logical abstraction for flexible management of resources Resource pools can be

grouped into hierarchies and used to hierarchically partition available CPU and memory resources

31 Ask about how HA works

VMware HA provides high availability for virtual machines by pooling them and the hosts they reside on

into a cluster Hosts in the cluster are monitored and in the event of a failure the virtual machines on a

failed host are restarted on alternate hosts

32 Is HA dependent on virtual center

(Only for Install)

33 What is the Maximum Host Failure allowed in a cluster

(4)

34 How does HA know to restart a VM from a dropped Host

(storage lock will be removed from the metadata)

35How many iSCSI targets will ESX support

8 for 301 (64 for 35)

36 How Many Fiber Channel targets

(256) (128 on Install)

37 What is Vmotion


5 of 10 232012 713 AM

(ability to move running vm from one host to another)

38 What is virtual SMP ndash

when and why should you give a vm multiple vCPUs - part of their answer whould be that best pracrtice

is to start with a single vCPU because of you can run into perfomance issues do to CPU scheduling

39 Ask what version of Linux kernel does ESX run

if they are truly experienced they should say ESX is not Linux and does not use a Linux kernel - and

give them an extra poijnt if they explain that the service console runs a modified version of Red Hat Ent

3 -

40 does HA use vmotion

the answer is no - vm stops and restarts on ESX other host

41 what is the different when you use viclient connect to VC and directly to ESX server itself

When you connect to VC you manage ESX server via vpxa (Agent on esx server) Vpxa then pass those

request to hostd (management service on esx server) When you connect to ESX server directly you

connect to hostd (bypass vpxa) You can extend this to a trobleshoot case where connect to esx see one

thing and connect to VC see another So the problem is most likely out of sync between hostd and vpxa

service vmware-vpxa restart should take care of it

42 What was the most difficult VMWare related problemissue you faced in a production

environment and what were the specific steps you took to resolve it

HA issues ndash because of dns problems the hosts are unable to communicate together Corrected by

adding all servers iprsquos in each serverrsquos etchosts file

VM was not powered up ndash because the swap file was locked by another host when I try to power on the

vm its not powering up After releasing the lock its powered on

43 When was the last time you called VM Support and what was the issue

Licensing related issues

44 What was the most performance intensive production app that you supported in VMware

and what were the some of the challenges that it posed

In exchange sharepoint demo project getting lot of VLAN issues (its my experience you can say yours)

45 How would you determine that a perf intensive app is a good candidate Spefically what

tools would you use to identify candidates Specifically inside those tools what metrics would

you use



46 What is yor philosophy on how much of the data center can be virtualized (If the

interviewer wants max virtualization but the interviewee is not convinced that this is a good

idea this could be a deal breaker)



47 What is your opinion on the virtualization vendors (MS vs VM vs Citrix vs etc) and why

(Just trying to figure out if the candidate is keeping up with this ever changing virtualization

market)




6 of 10 232012 713 AM

48 I beleive another good question would be to ask the candidate to briefly describe VST

VGT amp EST mode and 8021Q trunking I say this because networking is such an important

part of VMware implementations and on going support do you really want a VMware

engineer working in your environment if they lack the knowledge of these concepts (+unless

of course they are only delegated with low level permissions for generic VM operations+)



More information on these modes can be found here wwwvmwarecompdfesx3_vlan_wppdf

Also ask the candidate to explain why one mode would be used as opposed to another remember that

there can be numerous reasons for the use of different modes depending on your companyclients

network security policies etc

49 If you are interviewing for a consultant role it would also be a good scenario to provide a

brief overview of a fictional network and ask the candidate to do a whiteboard draft of how

the network would be layed out if say the ESX servers have 6 NICs or 8 NICs etc etc



50 What are notable files that represent a VM

vmx ndash configuration settings for VM

vmxf ndash configuration settings used to support an XML-based VM configuration API

vmtx ndash configuration settings for a Template VM (replaces the vmx file)

vmdk ndash virtual disk file (Note if a thick disk is used a ndashflatvmdk file that represents the actual

monolithic disk file will exist but will be hidden from the vSphere Client)

nvram ndash non-volatile memory (BIOS)

vswp ndash swap file used by ESXESXi per VM to overcommit memory ie use more memory than

physically available This is created by the host automatically when powering on a VM and deleted

(default behavior) when powering off a VM Swap files can remain and take up space if a host failed

prior to shutting down a VM properly Normally the swap file is stored in the location where the VM

configuration files are kept however the location can be optionally located elsewheremdashfor example

locally for performance reasons and if using NASNFS local swap should be used

vmss ndash suspend file (if placed into vvmssdn ndashndash fsonra psnshaopts hfiolet management suspend power mode)

51 Host Profiles

What licensing is required for Host Profiles Available with vSphere Enterprise Plus edition

52 Can Host Profiles work with ESXESXi 3x hosts

No Only starting with ESXESXi 40

53 Can Host Profiles be used with a cluster running both ESX and ESXi hosts

Yes but remember to use an ESX host and not an ESXi host to create a profile for use

In theory Host Profiles should work with mixed host clusters as it translates ESX to ESXi but be

careful as there are enough differences between ESX and ESXi that can lead you to make

self-inflicted errors when applying Host Profiles The easiest method is to create clusters that are

homogeneous and maintain two different profiles for these two types of clusters

54 Can Host Profiles work when using the Cisco Nexus 1000v

No because Host Profiles was designed with the generic vNetwork Distributed Switch The Cisco

Nexus 1000v switch gives administrators finer-grained control of the networking beyond what

Host Profiles can apply

55 What are host profiles

A set of best practiced configuration rules which are can be applied to entire cluster or to an individual

host So that all the hosts in sync with each other this will avoid vmotion drs and ha problems

56 Could not power on VM no swap file

My ESXi 35 machine runs 8-10 VMs (Win2k3 and WinXP) normally At the moment 5 of them are

complaining that they cannot Power On They seem to start and then complain Could not power on VM


7 of 10 232012 713 AM

no swap file I had a look with the data browser Its a small installation so the vswp files ought to be in

the same directory as the vmx file (I did not inttionally put them anywhere else) Of course I dont see a

vswp file there because the machine is not running I dont know enough about the vmx file structure to

identify if anything is wrong in the specifications I have downloaded one of the vmx files and attached it

here Please either tell me what to change in that vmx file or suggest another approach to get the

machines to start

57 What are the available Storage options for virtual machines Raw device mappings

VMFS


58 What are the differences between Virtual and Physical compatibility modes when mapping

the Raw Devices to virtual machines

You can configure RDM in two ways

Virtual compatibility modemdashthis mode fully virtualizes the mapped device which appears to the

guest operating system as a virtual disk file on a VMFS volume Virtual mode provides such benefits of

VMFS as advanced file locking for data protection and use of snapshots

Physical compatibility modemdashthis mode provides access to most hardware characteristics of the

mapped device VMkernel passes all SCSI commands to the device with one exception thereby

exposing all the physical characteristics of the underlying hardware In this mode the mapping is done

as follows when we create a mapping the configuration stored in a file and that file is stored with the

vm files in datastore This file points to the raw device and makes it accessible to the vm

59 What are RDM Limitations

RDM limitations

There are two types of RDMs virtual compatibility mode RDMs and physical compatibility mode RDMs

Physical mode RDMs in particular have some fairly significant limitations

No VMware snapshots

No VCB support because VCB requires VMware snapshots

No cloning VMs that use physical mode RDMs

No converting VMs that use physical mode RDMs into templates

No migrating VMs with physical mode RDMs if the migration involves copying the disk

No VMotion with physical mode RDMs

Virtual mode RDMs address some of these issues allowing raw LUNs to be treated very much like virtual

disks and enabling functionality like VMotion snapshotting and cloning Virtual mode RDMs are

acceptable in most cases where RDMs are required For example virtual mode RDMs can be used in

virtual-to-virtual cluster across physical hosts Note that physical-to-virtual clusters across boxes

though require physical mode RDMs

While virtual disks will work for the large majority of applications and workloads in a VI environment

the use of RDMs--either virtual mode RDMs or physical mode RDMs--can help eliminate potential

compatibility issues or allow applications to run virtualized without any loss of functionality

I previously posted some questions related to VMware already And the post has very good

response You can read it here - httpwww2isupportyounet201006vmware-interviewquestions-

tipshtml

Other links on my blog

How to access ESX Server in Different ways What are the major differences in

these


8 of 10 232012 713 AM

Virtual Center Centralized Administration of Virtual Infrastructure

VMWare Interview Questions amp Tips ndash Part -I

How to fix HA errors in VMware ESX Server

How to install Virtual Center 25 vCenter 40 in a simple steps

Unable to power on the Virtual Machine How to fix it

What is vMotion How it Happens

What is VMware Consolidated Backup and How it is used

Virtualization Basics

VMware ndash Virtual Networking

VMware ESX Server Virtualization Expert

Virtual Machine Provisioning


these


VMware Workstation A Virtual Friend

How to Setup VMware Infrastructure using VMware Workstation


9 of 10 232012 713 AM

VMware Storage A Place to store VMrsquos

VMFS Virtual Machine File System

VMware Storage How to configure Datastores using FC SAN

Question ESX installation inside VMware workstation problems

Openfiler Opensource iSCSI SAN Server

VMware Storage Configuration Using iSCSI SAN

VMware Storage RDM Raw Device Mappings

vSphere Completeness of Virtualization

vSphere PowerCLI Getting Started

VMware Storage NFS Datastores

Published by Google Docs ndash Report Abuse ndash Updated automatically every 5 minutes


10 of 10 232012 713 AM

Please come to my blog to acess the samehttpwww2isupportyounet

Some Important Points About VMWare

1 VMWare Kernel is a Propriotory Kenral and is not based on any of the UNIX ope

rating systems its a kernel developed by VMWare Company

2 The VMKernel cant boot it by itself so that it takes the help of the 3rd pa

rty operating system In VMWare case the kernel is booted by RedHat Linux operat

ing system which is known as service console

3 The service console is developed based up on Redhat Linux Operating system i

t is used to manage the VMKernel

4 To restart webaccess service on vmware

service vmware-webaccess restart

5 To restart ssh service on vmware

service sshd restart

6 To restart host agent on vmware esx server

service vmware-hostd restart

7 Path for the struts-configxml

usrlibvmwarewebAccesstomcatapache-tomcat-5517webappsuiWEB-INF

8 To start the scripted install the command is

esx ks=nfs111222333444dataKSconfig ksdevice=eth0

location device name

9 Virtual Network in Simple

Virtual Nic(s) on Virtual Machine(s) -----gt Physical Nic on the ESX Server (V

irtual Switch - 56 Ports) ------gt Physical Switch Port

with Different VLANS

should be tr

unked with all the VLANS to which the VMs need access

All the ESX servers should be configured with Same number of Physical Nics (v

Switches) and Connectivity also should be same So that vMotion succeeds

All the Virtual Machines are connected to one vSwitch with Different VLANS t

his means the Physical Nic(vSwitch) needs to be trunked with the same VLANS on t

he Physical Switch Port

10 What are the three port groups present in ESX server networking

1 Virtual Machine Port Group - Used for Virtual Machine NEtwork

2 Service Console Port Group - Used for Service Console Communications

3 VMKernel Port Group - Used for VMotion iSCSI NFS Communications

11 What is the use of a Port Group

The port group segregates the type of communication

12 What are the type of communications which requires an IP address for sure

Service Console and VMKernel (VMotion and iSCSI) these communications does n

ot happen without an ip address (Whether it is a single or dedicated)

13 In the ESX Server licensing features VMotion License is showing as Not used

why

Even though the license box is selected it shows as License Not Used unti

l you enable the VMotion option for specific vSwitch

14 How the Virtual Machine Port group communication works

All the vms which are configured in VM Port Group are able to connect to t

he physical machines on the network So this port group enables communication be

tween vSwitch and pSwitch to connect vms to pms

15 What is a VLAN

A VLAN is a logical configuration on the switch port to segment the IP Traf

fic For this to happen the port must be trunked with the correct VLAN ID

16 Does the vSwitches support VLAN Tagging Why

Yes The vSwitches support VLAN Tagging otherwise if the virtual machines

in an esx host are connected to different VLANS we need to install a separate p

hysical nic (vSwitch) for every VLAN That is the reason vmware included the VLA

N tagging for vSwitches So every vSwitch supports upto 1016 ports and B

TW they can support 1016 VLANS if needed

17 What is Promiscuous Mode on vSwitch What happens if it sets to Accept

If the promiscuous mode set to Accept all the communication is visible to

all the virtual machines in other words all the packets are sent to all the por

ts on vSwitch

If the promiscuous mode set to Reject the packets are sent to inteded port

so that the intended virtual machine was able to see the communication

18 What is MAC address Changes What happens if it is set to Accept

When we create a virtual machine the configuration wizrd generates a MAC ad

dress for that machine you can see it in the vmx (VM Config) file If it doesn

t matches with the MAC address in the OS this setting does not allow incoming

traffic to the VM So by setting Reject Option both MAC addresses will be re

mains same and the incoming traffic will be allowed to the VM

19 What is Forged Tranmits What happens if it is set to Accept



t matches with the MAC address in the OS this setting does not allow outgoing

traffic from the VM So by setting Reject Option both MAC addresses w

ill be remains same and the outgoing traffic will be allowed from the VM

20 What are the core services of VC

VM provisioing Task Scheduling and Event Logging

21 Can we do vMotion between two datacenters If possible how it will be

Yes we can do vMotion between two datacenters but the mandatory requiremen

t is the VM should be powerd off

22 What is VC agent and what service it is corresponded to What are the minim

um reqs for VC agent installation

VC agent is an agent installed on ESX server which enables communication be

tween VC and ESX server

The daemon associated with it is called vmware-hostd and the service whi

ch corresponds to it is called as mgmt-vmware in the event of VC agent failure

just restart the service by typing the following command at the service console

service mgmt-vmware restart

VC agent installed on the ESX server when we add it to the VC so at the ti

me of installtion if you are getting an error like VC Agent service failed to

install check the Opt size whether it is sufficient or not

23 How can you edit VI Client Settings and VC Server Settings

Click Edit Menu on VC and Select Client Settings to change VI settings

Click Administration Menu on VC and Select VC Management Server Configurati

on to Change VC Settings

24 What are the files that make a Virtual Machine

vmx - Virtual Machine Configuration File

nvram - Virtual Machine BIOS

vmdk - Virtual Machine Disk file

vswp - Virtual Machine Swap File

vmsd - Virtual MAchine Snapshot Database

vmsn - Virtual Machine Snapshot file

vmss - Virtual Machine Suspended State file

vmwarelog - Current Log File

vmware-log - Old Log file

25 What are the devices that can be added while the virtual Machine running

Only HardDisk

26 How to set the time delay for BIOS screen for a Virtual Machine

RC on VM select edit settings choose options tab and select boot option

set the delay how much you want

27 What is a template

We can convert a Vm into Template and it cannot be powered on once its cha

nged to template This is used to quick provisioning of VMs

23 What to do to customize the windows virtual machine clone

copy the sysprep files to Virtual center directory on the server so that t

he wizrd will take the advantage of it

24 What to do to customize the linuxunix virtual machine clone

VC itself includes the customization tools as these operating systems are

avaialble as opensource

25 Does cloning from template happens between two datacenters

Yes it can if the template in one datacenter we can deploy the vm from

that template in another datacenter without any problem

26 What are the common issues with snapshots What stops from taking a snapshot

and how to fix it

If you configure the VM with Mapped LUNs then the snapshot failed If it

is mapped as virtual then we can take a snapshot of it

If you configure the VM with Mapped LUNs as physical you need to remove i

t to take a snapshot

27 What are the settings that are taken into to consideration when we initiate

a snapshot

Virtual Machine Configuration (What hardware is attached to it)

State of the Virtual Machine Hard Disk file ( To revert back if needed)

State of the Virtual Machine Memory (if it is powered on)

28 What are the requirements for Converting a Physical machine to VM

An agent needs to be installed on the Physical machine

VI client needs to be installed with Converter Plugin

A server to importexport virtual machines

29 What is VMWare consolidated backup

It is a backup framework that supports 3rd party utilities to take backups

of ESX servers and Virtual Machines Its not a backup service

30 To open the guided consolidation tool what are the user requirements

The user must be member of administator

The user should have Logon as service previlages - To give a user these p

revilages open local sec policy select Logon as service policy and add the use

r

The user should have read access to AD to send queries

31 How to restart firewall on ESX server

service firewall restart

32 What are the pre-requisites for VMWare Update Manager

Allow the Update Manager Clent in the Firewall

If you get metadata patch is missing error go to UpdateManager directory o

n C drive find the sub-directories for the updates are created or not To fix th

is Click on plugins menu Select Update manager and then Schedule Update Downloa

d this will download the updates to the directories

Add a Baseline to ESX server or Virtual Machine detect the updates

Put the host in maintanance mode to install the updates it is mandatory fo

r ESX server

33 What is the mandatory req for HA to work properly

DNS should be setup properly to enable communication between hosts in a clu

ster

34 How to set ESX Host into maintenance mode from Service console

Posted by Preetam Zare on August 24 2007

Below is the command which you will have to execute from SVC Console to enter ho

st into maintenance mode

vimsh -n -e hostsvcmaintenance_mode_enter

To exit maintenance mode

vimsh -n -e hostsvcmaintenance_mode_exit

Now next question is how I check whether host is in maintenance modeHere is it1048576

vimsh -n -e hostsvcruntimeinfo 1048576 grep inMaintenanceMode 1048576 awk 1048576print $31048576

httpwwwvmadmincoukvmware35-esxserver54-virtualswitchescmd

VMWare Top Interview Questions with Answers

1) Explain about your production environment How many clusterrsquos ESX Data Centers Hw etc

2) How does VMotion works Whatrsquos the port number used for it

ANS--gt TCP port 8000

3) Prerequisites for VMotion

Ans--gt

1)ESX Servers must be configured with VMkenerl ports enabled for vmotion and on the same

network segment

2)ESX Servers must be managed by the same Virtual Center server

3)ESX Must have compatible CPUs

4)ESX Servers muct have consisten Networks and NEtwroks labels

5)The VMs must be stored on shared storage - iSCSI or FC SAN or NASNFS

6)The VMs can not use localcdfloppy or internal only vrtual switches on the ESX server

Check out httpwwwvmwarecompdfvi3_35esx_3r35u2vi3_35_25_u2_admin_guidepdf for

more information

4) How does HA works Port number How many host failure allowed and why

ANS--gt Maximum allowed host failures within a HA cluster is 4 What happens if 4 hosts have failed

and a 5th one also fails

I have still enough free resources to start up the virtual machines on the remaining hosts Will HA

start these virtual machines from the 5th failed host on the remaining hosts

ANS) That depends If you have admission control enabled if there are any resource constraints

some VMs may not restart If you have admission control disabled the VMs will get restarted on

any host left in the cluster However that doesnt mean they will be functional Make sure you

have enough port groups configured on your vSwitch for your Virtual Machine port group to

accommodate

Host Firewalls On ESXESXi hosts VMware HA needs and automatically opens the following

firewall ports

Incoming port TCPUDP 8042-8045

Outgoing port TCPUDP 2050-2250

5) What are active host primary host in HA Explain it

ANS--gt

When you add a host to a VMware HA cluster an agent is uploaded to the host and configured to

communicate

with other agents in the cluster The first five hosts added to the cluster are designated as primary

hosts and

all subsequent hosts are designated as secondary hosts The primary hosts maintain and replicate

all cluster

state and are used to initiate failover actions If a primary host is removed from the cluster

VMware HA

promotes another host to primary status

Any host that joins the cluster must communicate with an existing primary host to complete its

configuration

(except when you are adding the first host to the cluster) At least one primary host must be

functional for

VMware HA to operate correctly If all primary hosts are unavailable (not responding) no hosts can

be

successfully configured for VMware HA

One of the primary hosts is also designated as the active primary host and its responsibilities

include

n Deciding where to restart virtual machines

n Keeping track of failed restart attempts

n Determining when it is appropriate to keep trying to restart a virtual machine

If the active primary host fails another primary host replaces it

6) Prerequisites for HA

First for clusters enabled for VMware HA all virtual machines and their configuration files must

reside on shared storage (Fibre Channel SAN iSCSI SAN or SAN iSCI NAS) because you need to

be able to power on the virtual machine on any host in the cluster

Second VMware HA monitors heartbeat between hosts on the console network for failure

detection So to have reliable failure detection for HA clusters the console network should have

redundant network paths That way if a hosts first network connection fails the second

connection can broadcast heartbeats to other hosts

Last if you want to use DRS with HA for load balancing the hosts in your cluster must be part of

a VMotion network If the hosts are not in the VMotion network however DRS can still make

initial placement recommendations

7) How do DRS works Which technology used What are the priority counts to migrate the VMrsquos

8) How does snap shotrsquos works

9) What are the files will be created while creating a VM and after powering on the VM

10) If the VMDK header file corrupt what will happen How do you troubleshoot

11) Prerequisites VC Update manager

12) Have you ever patched the ESX host What are the steps involved in that

13) Have you ever installed an ESX host What are the pre and post conversion steps involved in

that What would be the portions listed What would be the max size of it

14) I turned on Maintenance mode in an ESX host all the VMrsquos has been migrated to another host

but only one VM failed to migrate What are the possible reasons

15) How will you turn start stop a VM through command prompt

16) I have upgraded a VM from 4 to 8 GB RAM itrsquos getting failed at 90 of powering on How do

you troubleshoot

17) Storage team provided the new LUN ID to you How will you configure the LUN in VC What

would be the block size (say for 500 GB volume size)

18) I want to add a new VLAN to the production network What are the steps involved in that And

how do you enable it

19) Explain about VCB What it the minimum priority () to consolidate a machine

20) How VDR works

21) Whatrsquos the difference between Top and ESXTOP command

22) How will you check the network bandwidth utilization in an ESXS host through command

prompt

23) How will you generate a report for list of ESX VMrsquos RAM and CPU used in your Vsphere

environment

24) What the difference between connecting the ESX host through VC and Vsphere What are the

services involved in that What are the port numbersrsquos used

25) How does FT works Prerequisites Port used

26) Can I VMotion between 2 different data centers Why

27) Can I deploy a VM by template in different data centers

28) I want to increase the system partition size (windows 2003 server- Guest OS) of a VM How will

you do it without any interruption to the end user

29) Which port number used while 2 ESX transfer the data in between

30) Unable to connect to a VC through Vsphere client What could be the reason How do you

troubleshoot

31) Have you ever upgraded the ESX 35 to 40 How did you do it

32) What are the Vsphere 40 VC 40 ESX 40 VM 70 special features

33) What is AAM Where is it used How do you start or stop through command prompt

ANS) VMware-aam = HA

VMware purchased the HA technology from Legato who originally coined it as Automated

Availability Manager

34) Have you ever called VMWare support Etc

35) Explain about Vsphere Licensing License server

36) How will you change the service console IP

Note ESX 40 Update 2 introduces a new tool that simplifies the process of creating or restoring

networking in the ESX service console For more information see Configuring or restoring

networking from the ESX service console using console-setup (1022078)

Changing settings from the physical or remote console connection

Changing the IP for the Service Console must be done from the physical console or through a

remote console session If you make changes through a network connection such as SSH network

connectivity to the Service Console disconnects because the Service Consoles network interface

changes

1Run this command to set the IP address

[rootserver root] esxcfg-vswif -i -n vswif0

where is the IP address and is the subnet mask

Note In this example vswif0 is the Service Console adapter that is the interface to which you are

applying the IP address change

2Open the etchosts file with a text editor and modify it so that it reflects the correct IP

address and hostname

3To change the default gateway address and the hostname edit the etcsysconfignetwork file

and change the GATEWAY and HOSTNAME parameters to the proper values

4For the changes to take place restart the network service with the command

[rootserver root] service network restart

Note If you are required to edit the hostname then you must reboot the host

Note This command breaks any current network connections to the Service Console but virtual

machines continue to have network connection If the ESX host is managed by VirtualCenter or

vCenter Server you may have to remove and re-add the host to the inventory For more

information see ESX not working properly in VirtualCenter after IP address change (1005633)

Note Making changes to IP and DNS server settings can have a negative impact on the normal

operation of ESXESXi particularly in HA clustered environments For more information see

Identifying issues with and setting up name resolution on ESXESXi Server (1003735)

Note If the changed IP does not persist across a reboot try deleting and recreating the Service

Console vswif management interface For more information see Recreating Service Console

networking from the command line (1000266)

Changing the hostname without rebooting

To dynamically change the hostname run the command

[rootserver root] hostname newname

Note This command creates a temporary hostname change This change is lost when the system is

rebooted

Changing the DNS server settings

To change the DNS server settings update the nameserver IPs and search domain in the

etcresolvconf file

Changing settings in VMware vSphere or Infrastructure Client

To change the hostname domain DNS servers and default gateway in VMware vSphere or

Infrastructure Client

1Highlight the ESX host and click the Configuration tab

2Click DNS and Routing

3Click Properties

4To change the hostname domain and DNS servers click the DNS Configuration tab and enter

the appropriate values

Note Disable VMware High Availability if you do not want virtual machines to failover during the

hostname IP change

5To change the default gateway click the Routing tab and enter the appropriate value

6Reboot the ESX host for the changes to take effect

7Reconnect the ESX host to vCenter Server with the new IP address

Generating new certificates for the ESX host

The ESX host generates certificates the first time the system is started Under certain

circumstances it might be required to force the host to generate new certificates Typically new

certificates only need to be generated if the hostname has been changed or the certificates have

been deleted accidentally

Each time you restart the vmware-hostd process the mgmt-vmware script searches for existing

certificate files ( ruicrt and ruikey) If the files cannot be found new certificate files are

generated

To generate new certificates

1Put the host into Maintenance Mode

2In the directory etcvmwaressl back up any existing certificates by renaming them with these

commands

[rootserver root] mv etcvmwaresslruicrt etcvmwaresslorigruicrt

[rootserver root] mv etcvmwaresslruikey etcvmwaresslorigruikey

Note If you are regenerating certificates because you accidentally deleted them you do not have

to rename them

3Reboot your host to allow it to begin using the new certificate or restart the host services

aRestart hostd using this command


bRestart vmkauthd using this command

service vmware-vmkauthd restart

4Exit Maintenance Mode

5Confirm that the ESX host successfully generated new certificates by running this command and

comparing the time stamps of the new certificate files with origruicrt and origruikey

[rootserver root] ls -la etcvmwaresslrui

Notes

bullDisable VMware High Availability if you do not want virtual machines to failover during the

hostname IP change If you are using vSphere 4x you can just disable host monitoring in the HA

settings

bullFor related information see Verifying ESX Server host networking configuration on the service

console (1003796)

bullYou may be required to regenerate your SSL certificate For more information see Replacing or

Regenerating an SSL Certificate for the Management Interface (1843)

bullYou are required to edit files on an ESX host For more information see Editing files on an ESX

host using vi or nano (1020302)

bullFor information on replacing VirtualCenter Server ceritificates see

Replacing VirtualCenter Server Certificates in Virtual Infrastructure 3

Replacing VirtualCenter Server Certificates in vSphere 4

bullThe iSCSI Qualified Name used for iSCSI storage configuration is based on the hostname of the

ESX host If you change the hostname of the ESX host ensure to review your iSCSI software

initiator configuration For more information on iSCSI troubleshooting see Configuring and

troubleshooting basic software iSCSI setup (1008083)

bullFor more information on changing the hostname see Changing the name of an ESX host

(1010821)

37) Whatrsquos the difference between ESX and ESXi

38) Whatrsquos the difference between ESX 35 and ESX 40

39) P2V Prt Number and Log file location

TCPIP Ports Required by VMware Converter

Table lists the ports Converter uses in the conversion process

If your VirtualCenter Servers or ESX Servers are configured to listen on port 905 you will have to

make

adjustments accordingly

Communication Paths | Port

Converter application to remote physical machine | 445 and 139

Converter application to VirtualCenter Server | 902

Converter application to ESX Server 3x | 902

Physical machine to VirtualCenter Server | 902

Physical machine to ESX Server 3x | 902

Log File Locations

UFAD logs

WINDIRTempvmware-tempvmware-converter

WINDIRvmware-tempvmware-converter (in Windows NT)

Client logs

TEMPvmware-tempvmware-client

Send these in to support using File gt Export Logs For Converter Boot CD map a network drive

using the

network configuration tool (see Chapter 5 ldquoUsing the Converter Boot CD for Local Cold Cloningrdquo

on page 37)

and use File gt Export Logs

40) Micro vMotion

41)

-------------------------------------------------------------------------------------------------------------------------

----------------------------------------------

Q How is VMware more stable than say a new physical server

A The idealized hardware provided by VMware provides a consistent virtual hardware

environment that increases that stability of your virtual machines independent of the underlying

physical hardware

Q Is any installation method better than any other

A No Whichever installation method youre comfortable with and that produces a good build is

the one for you

Q Im having problems with my installation What should I do

A Ensure that the hardware youre loading ESX Server on is supported The same goes for the

configuration If you are certain the hardware and configuration are supported then run the vmsupport

script mentioned previously

Q Why does this chapter include only the graphical installer method

A Its the recommended installation method from VMware and one that many in the x86-world are

the most comfortable with If you wish to try it another way VMware offers a very complete

installation document covering the various installation methodologies

Q When I copy my virtual machine and try to run it on my network I get hostname already exists

and IP address already exists errors I thought I could simply copy my virtual machine What is the

problem

A You can copy your virtual machine which is why youre running into this problem The copy is

an exact copy Thus you need to change the hostname IP address and even the computers SID (if

it has one)

Q Can I move my Gold Master to my other ESX Servers

A Yes its a recommended time-saver If your ESX Servers share a LUN that too is a way to access

your Gold Master or your VMlibrary for that matter

Q Are there any limitations to the number of virtual machines I can run on my ESX Server

A Yes Each ESX Server allows for only 80 virtual CPUs and 200 registered virtual machines

Q Can I take a virtual machine running on VMware Workstation or GSX and run it in ESX

A It depends The process is not as simple as cutting and pasting There is a specific import

process required for migrating virtual machines from either Workstation or GSX into ESX Access

the following link for the exact instructions httpwwwvmwarecompdfmobility_guidepdf

Q Do you need to tweak the settings of your virtual machines after youve built them

A No VMware has configured the defaults of your build to suit most server loads However

depending on the profile of your server and the resource intensiveness of the service its providing

you may want to consider tweaking some of the default settings to better ensure service stability

and reliability

Q Are there more advanced features than the ones detailed in this chapter

A Yeshellip a lot more

Q Is clustering more stable in VMware

A We find that the idealized hardware in combination with VMwares improvements in clustering

support has made virtual clustering very stable

Q Can you Vmotion a cluster

A That depends on the cluster type and how it is configured Clusters using Raw Device Mapping

in virtual mode can be moved with Vmotion according to VMware documentation

Q Does VMware support NIC teaming

A Yes and its a very good idea to configure your ESX Server especially if its for production with

teamed NICs This will provide hardware fault tolerance in case one NIC fails

Q How many physical NICs do I need on my ESX Server

A That depends on the number of virtual machines and the network traffic they produce You

should have a minimum of two one for your Service Console and one dedicated to your virtual

machines

Q If Im building a cluster using Microsoft Clustering Service whats the best configuration for my

heartbeat NIC

AFor a Cluster in a Box create a VMnet that your nodes of your cluster can attach their heartbeat

NICs

Q Can you attach virtual machines on any ESX Server to a VMnet

A No Only virtual machines on the ESX Server that the VMnet resides can attach to it

Q Why should you pay for a p-to-v toll when there are a number of ways to do it for free

A If you dont have the time or inclination to learn the manual process or need the assurance of a

vendor for your physical-to-virtual migrations then a tool that comes with support is a very

reasonable option

Q What takes the longest in the p-to-v process

A Transferring the data of the physical server into either an image file or the virtual server itself

Thats why tweaking your network settings for optimal throughput is essential when p-to-ving a

server

Q Can you create complete backups of your physical servers and then recover them into virtuals

A Ive used NTBackup to back up Windows 2000 Professional and Windows XP and created virtuals

out of bkf files It works but theres a bit of futzing around with the virtual once it is running Try

it

Q Whats the most essential part of creating a smooth migration plan

A Practice No matter what the tool or process practice it and learn its gotchas and the

workarounds No matter what method you use there will be times when it wont go as planned

Practicing your p-to-v process on a number of physical platforms and disk configurations allows

you to become more adept once youre doing it for real

Q Will my software vendor support my application in a VMware environment

A Youll need to contact your specific software or applications vendor to find out however an

increasing number of software vendors support virtualized environments Once youve migrated

your application from a physical to virtual environment its very easy to migrate back to a physical

environment for vendor support An excellent document provided by VMware can be found at the

following link wwwvmwarecompdfms_support_statementpdf

Q What are the best enablers to help ensure our server consolidation is a success

A Engaging with the lines of business and application owners not only assists in attaining an

actionable schedule but also develops a highly collaborative environment that facilitates buy-in

and support for your project In addition it will be difficult to incorporate rationalization into your

project unless you are working directly with the business or application owners

Q What tools do you recommend for a server consolidation or virtualization project

A Its imperative to have a robust and comprehensive tool for capacity planning including

historical data This tool can be utilized in every phase of your project Other tools to support the

project include modeling tools used in test consolidation scenarios Finally youll need to evaluate

and document tools and processes for each technology you wish to consolidate The migration

tools will need to support all the platforms you wish to use in your migration scenarios

Q What is the VMlibrary

A The VMlibrary (vmlib) is simply a directory on your ESX Server that lets you organize the tools

and files you need to manage and maintain your virtual infrastructure

Q Can ISOs be shared between ESX Servers

A If you place your VMlibrary on a LUN thats shared amongst your ESX Servers you can share your

ISO images or anything else you place in your VMlibrary

Q Why is Vmotion so cool

A Try ithellipand then imagine the possibilities and applications Youll be a convert soon enough

Q You mentioned that additional ISVs were creating management capabilities for virtual

infrastructures in their products Which ones

A Look at HP Insight Manager Dell OpenManage IBM Director BMCs Patrol product line Computer

Associates Unicenter and many others

Q I cant add a new virtual hard drive to my virtual machine What should I do

A You may not have the appropriate permissions to add virtual hardware to the VM or the VM

may be powered on and wont allow the addition of virtual hardware while powered on

Q I just created a new virtual machine and attached to an existing disk Every time I power on

the VM I get a blue screen What could the problem be

A Make sure the OS type that you selected when you created the VM matches the OS type

installed on the virtual disk For example if you selected Windows 2003 Standard for the VM when

you created it but the existing virtual disk has Windows 2000 Standard installed youll probably

encounter issues

Q I followed the directions for Active Directory authentication and I still cant log in using an

account and password in AD What should I do

A Check the time on your ESX Server and Active Directory and make sure theyre synced up

Kerberos is very sensitive to being out of sync and could reject credentials if the time is not within

specific limits You can also review the System event logs for clues

Q What is the most important aspect of deploying ESX Server and virtual machines

A The ability to provide service at least as good as that which you had with physical servers With

adherence to best practices you should easily be able to provide this and exceed it by a

phenomenal degree

Q ISOs have been mentioned in several of the chapters Why are they so important

A Good administrators strive to never leave their chairs cubes or offices If they do they may

just run into a user (were kidding of course) Having a library of ISOs can help you in this

endeavor In addition they run a lot faster than regular CDs

Q What will happen if I deploy systems management software on the ESX Server itself

A If youre going to do this make sure you allocate enough memory so that the application doesnt

impact the performance of your ESX Server and thus your virtual machines Also use a system

management package that is supported and test your installation on your ESX Server thoroughly If

you notice a degradation of performance contact the systems management software vendor The

major vendors have instructions and best practices for deploying their products onto ESX Server

Q What is the most important best practice to follow

A The one that ensures your smooth evolution into a virtual infrastructure education Learn every

aspect of a virtual environment to the best of your ability Be passionate about it and youll reap

the rewards See the recommended reading list troll the VMware Web site regularly as well as

other Web sites dedicated to virtualization such as p2vnet vmgurucom and virtualstrategy

com

Q Which version of VMware ESX Server supports Boot from SAN

A ESX Server 25 supports Boot from SAN but has the following limitations ESX server had to be

installed in boot from SAN mode the HBA can only be used by the Service Console LUN masking

should be used to restrict other ESX servers from the boot LUN the HBA of the boot LUN must be a

QLogic HBA and the boot LUN must be the lowest numbered LUN controlled by the storage

processor

Q Where are log files for VMware ESX Server written to

A varlogsvmware

Q What do you do if you forget the root password of the Service Console

A You will need to boot into single-user mode from the Service Console by selecting linux from

the LILO boot menu and appending -s to your boot choice This will boot the console into singleuser

mode and will allow you to use the passwd command to change the root user password

Q Why do I still see processes for my virtual machine when running the ps command on the

Service Console even though my virtual machine is powered down

A If there is still a virtual console session running for your VM you will still see processes

associated with it for mouse keyboard and screen (MKS) even though it is powered off

Q I accidently unmounted the VMFS volume on my ESX Server How can I re-mount the volume

without re-booting

A You can type mount t vmfs vmfs vmfs

Q What software is qualified for use with VMware 251

A Please see httpvmwarecompdfesx_backup_guidepdf for an up-to-date list of software

thats compatible with ESX

Q What SANs are compatible with ESX Server

A Please see httpvmwarecompdfesx_SAN_guidepdf for details on ESX-to-SAN server

compatibility

Q What are the certified backup tools for ESX

A Please see httpvmwarecomsupportesx25docbackup_tools_linkshtml

Q Can I back up my entire virtual machine from the Service Console

A Yes but it is not advised The console services should be left alone to manage the entire virtual

machine infrastructure Its best that backups be performed by separating the applications and

data from the operating systems because backups can become quite large very quickly You should

consider a backup of the environments that change frequently (data and applications) with an

agent specifically designed to perform this function A backup of those virtual disks that change

infrequently and need VMFS formats should be backed up from the Service Console These

console-based backups should be performed in a powered-down or suspended approach

(preferred) or a suspended environment using redo logs as an alternative All backups performed

from a systems console mode must be restored in an all-or-nothing approach Recovery for a single

file or directory can only be accomplished via a backup agent or from a backup to a SAN

environment using a variety of different recoveryrestoral techniques

Q Im not able to connect to the Service Console over the network What could the issue be

A You may have allocated the Service Console NIC to the VMkernel Use vmkpcidivyi to reassign

the NIC to the Service Console

Q I have a virtual machine that did not start up correctly but now I cant power it down from the

MUI or Virtual Center How can I get this VM to shut down

A You can use the vmware-cmd utility to force a hard power down The following syntax should

work

vmware-cmd path-to-vmvm-directoryvmvmx stop hard

Q I find using commands to be very difficult Why cant I use X Windows on the Service Console

A You actually could run the X Windows system on the Service Console but it will eat up valuable

resources that are needed by the system to manage all the processes related to Virtualization

VMware specifically says not to run X Windows on the Service Console So its best to just buck up

and deal with it

Q Is there a way to mount the vmfs volumes if they accidentally get unmounted without having to

reboot

A Yes You can run mountt vmfs vmfs vmfs

Q How do I check the speed and duplex setting of the Service Console NIC Also how do I change

it if needed

A Youll need to cat out the eth0info file for your type of adapter This file can be found at

procnettype-of-niceth0info To give you an example our server has an Intel Pro 100 Nic for

the Service Console so for us to find the speed and duplex information we would type cat

procnetPRO_LAN_Adapterseth0info

Q How long has Xen been around

A Since 2004 and theyre located in Palo Alto California Hmmhellipwhat other virtualization

company is in Palo Alto

Q What is a hypervisor

A In VMware parlance its the virtualization layer

Q Why did VMware limit its beta of ESX Server 30 to so few

A Good questionhellipWe dont know and we hope that VMwares future beta programs are opened up

to a larger audience

Q If I cant get a SAN will local storage with a RAID device be sufficient

A Absolutely You wont get some of the cooler tools like VMotion but being virtual on local

storage is better than remaining physical

23What happens to Virtaul Machines when one server in HA cluster goes down

24What happens to Virtual machines when one server in DRS cluster goes down

25Can we establish a cluster with different processor

26Explain technical functionality of Vmotion

27Explain technical functionality of HA Cluster

28In cluster if Virtual center goes down what happens

29What is the port no of Virtual Center server

30Which Webserver will be used by Virtual Center server

31How can you verify the physical Ethernet adaptors using Service console

32What do you mean by Paravirtualization

33How do you create Resource pools

34What is the difference between Limit amp Reservation in Resource pools

35What is the use of Shares

36What is difference between available memory and Reservation

37What is role as a Vmware administrator

38What kind of activities will be performed on a daily basis in ESX Server

39Explain about your environment ( How many esx servers configuration of esx

servers how many virtual machines storage)

40How do extent datastores

41Can we attach 4 TB Partition as VMFS filesystem

42What is the use of promiscuous mode in Traffic shaping

43What traffic shaping policies are available

44Which daemon in ESX server is responsible for authenticating

45Which daemon in ESX Server is responsible for responding to Virtual Center

46What is the maximum no of ESX Servers can be added to Virtual center 2

47What happens to virtual center if you change the password of root account in ESX Server

48What will you do if OS Gets corrupted in VM

49How do you troubleshoot the Guest Os in VM

50How do you troubleshoot ESX Server

51How do you power on VM in Service console




and Virtual Center










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4







virtual machines


10










Consolidated Backup















vCenter Server

5























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works











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hosts









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iSCSI uses RJ45


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28 What is vmmemctl




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(Only for Install)


(4)




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37 What is Vmotion


5 of 10 232012 713 AM








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you use










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51 Host Profiles





















7 of 10 232012 713 AM






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these





9 of 10 232012 713 AM













10 of 10 232012 713 AM

























should be tr

















why







15 What is a VLAN












ts on vSwitch














































Only HardDisk

















and how to fix it






a snapshot















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more information










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all cluster


VMware HA



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include




























you troubleshoot






20) How VDR works



prompt


environment










troubleshoot

















changes



























rebooted



etcresolvconf file






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hostname IP change











generated




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to rename them










Notes



settings


console (1003796)













(1010821)







make








Log File Locations

UFAD logs



Client logs



using the


on page 37)


40) Micro vMotion

41)

-------------------------------------------------------------------------------------------------------------------------

----------------------------------------------




physical hardware



the one for you











problem



it has one)














and reliability















machines


heartbeat NIC


NICs






reasonable option




server




it











































encounter issues









phenomenal degree
















com






processor


A varlogsvmware










without re-booting







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work






and deal with it


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it if needed



















and Virtual Center










VI Client






migration























4







virtual machines


10










Consolidated Backup















vCenter Server

5























scale












6














details



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7


receive an error











25







machines


console













8














4 environment



ESX Servers












for cold cloning




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disabled
































clients





proper distribution


































1 of 10 232012 713 AM















Features



change etc)







journaling

Limitations







18







luns



rd










2 of 10 232012 713 AM





channel adaptor


























storage















time






3 of 10 232012 713 AM


















works











hardware platform





Linux guests




resource demands













hosts









4 of 10 232012 713 AM














iSCSI uses RJ45


IP Address








28 What is vmmemctl




ifconfig ndasha









(Only for Install)


(4)




8 for 301 (64 for 35)



37 What is Vmotion


5 of 10 232012 713 AM








3 -






















you use










market)




6 of 10 232012 713 AM































51 Host Profiles





















7 of 10 232012 713 AM






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VMFS














RDM limitations



No VMware snapshots
















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these


8 of 10 232012 713 AM













these





9 of 10 232012 713 AM













10 of 10 232012 713 AM

























should be tr

















why







15 What is a VLAN












ts on vSwitch














































Only HardDisk

















and how to fix it






a snapshot















r












r ESX server



ster
















Ans--gt


network segment







more information










accommodate


firewall ports




ANS--gt


communicate


hosts and


all cluster


VMware HA



configuration


functional for


be



include




























you troubleshoot






20) How VDR works



prompt


environment










troubleshoot

















changes



























rebooted



etcresolvconf file






3Click Properties




hostname IP change











generated




commands




to rename them










Notes



settings


console (1003796)













(1010821)







make








Log File Locations

UFAD logs



Client logs



using the


on page 37)


40) Micro vMotion

41)

-------------------------------------------------------------------------------------------------------------------------

----------------------------------------------




physical hardware



the one for you











problem



it has one)














and reliability















machines


heartbeat NIC


NICs






reasonable option




server




it











































encounter issues









phenomenal degree
















com






processor


A varlogsvmware










without re-booting







compatibility





















work






and deal with it


reboot



it if needed




























4







virtual machines


10










Consolidated Backup















vCenter Server

5























scale












6














details



details


















7


receive an error











25







machines


console













8














4 environment



ESX Servers












for cold cloning




request

9















disabled
































clients





proper distribution


































1 of 10 232012 713 AM















Features



change etc)







journaling

Limitations







18







luns



rd










2 of 10 232012 713 AM





channel adaptor


























storage















time






3 of 10 232012 713 AM


















works











hardware platform





Linux guests




resource demands













hosts









4 of 10 232012 713 AM














iSCSI uses RJ45


IP Address








28 What is vmmemctl




ifconfig ndasha









(Only for Install)


(4)




8 for 301 (64 for 35)



37 What is Vmotion


5 of 10 232012 713 AM








3 -






















you use










market)




6 of 10 232012 713 AM































51 Host Profiles





















7 of 10 232012 713 AM






machines to start


VMFS














RDM limitations



No VMware snapshots
















tipshtml



these


8 of 10 232012 713 AM













these





9 of 10 232012 713 AM













10 of 10 232012 713 AM

























should be tr

















why







15 What is a VLAN












ts on vSwitch














































Only HardDisk

















and how to fix it






a snapshot















r












r ESX server



ster
















Ans--gt


network segment







more information










accommodate


firewall ports




ANS--gt


communicate


hosts and


all cluster


VMware HA



configuration


functional for


be



include




























you troubleshoot






20) How VDR works



prompt


environment










troubleshoot

















changes



























rebooted



etcresolvconf file






3Click Properties




hostname IP change











generated




commands




to rename them










Notes



settings


console (1003796)













(1010821)







make








Log File Locations

UFAD logs



Client logs



using the


on page 37)


40) Micro vMotion

41)

-------------------------------------------------------------------------------------------------------------------------

----------------------------------------------




physical hardware



the one for you











problem



it has one)














and reliability















machines


heartbeat NIC


NICs






reasonable option




server




it











































encounter issues









phenomenal degree
















com






processor


A varlogsvmware










without re-booting







compatibility





















work






and deal with it


reboot



it if needed

















Consolidated Backup















vCenter Server

5























scale












6














details



details


















7


receive an error











25







machines


console













8














4 environment



ESX Servers












for cold cloning




request

9















disabled
































clients





proper distribution


































1 of 10 232012 713 AM















Features



change etc)







journaling

Limitations







18







luns



rd










2 of 10 232012 713 AM





channel adaptor


























storage















time






3 of 10 232012 713 AM


















works











hardware platform





Linux guests




resource demands













hosts









4 of 10 232012 713 AM














iSCSI uses RJ45


IP Address








28 What is vmmemctl




ifconfig ndasha









(Only for Install)


(4)




8 for 301 (64 for 35)



37 What is Vmotion


5 of 10 232012 713 AM








3 -






















you use










market)




6 of 10 232012 713 AM































51 Host Profiles





















7 of 10 232012 713 AM






machines to start


VMFS














RDM limitations



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8 of 10 232012 713 AM













these





9 of 10 232012 713 AM













10 of 10 232012 713 AM

























should be tr

















why







15 What is a VLAN












ts on vSwitch














































Only HardDisk

















and how to fix it






a snapshot















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r ESX server



ster
















Ans--gt


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more information










accommodate


firewall ports




ANS--gt


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hosts and


all cluster


VMware HA



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functional for


be



include




























you troubleshoot






20) How VDR works



prompt


environment










troubleshoot

















changes



























rebooted



etcresolvconf file






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hostname IP change











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commands




to rename them










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settings


console (1003796)













(1010821)







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Log File Locations

UFAD logs



Client logs



using the


on page 37)


40) Micro vMotion

41)

-------------------------------------------------------------------------------------------------------------------------

----------------------------------------------




physical hardware



the one for you











problem



it has one)














and reliability















machines


heartbeat NIC


NICs






reasonable option




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it











































encounter issues









phenomenal degree
















com






processor


A varlogsvmware










without re-booting







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work






and deal with it


reboot



it if needed


























scale












6














details



details


















7


receive an error











25







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console













8














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ESX Servers












for cold cloning




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9















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clients





proper distribution


































1 of 10 232012 713 AM















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change etc)







journaling

Limitations







18







luns



rd










2 of 10 232012 713 AM





channel adaptor


























storage















time






3 of 10 232012 713 AM


















works











hardware platform





Linux guests




resource demands













hosts









4 of 10 232012 713 AM














iSCSI uses RJ45


IP Address








28 What is vmmemctl




ifconfig ndasha









(Only for Install)


(4)




8 for 301 (64 for 35)



37 What is Vmotion


5 of 10 232012 713 AM








3 -






















you use










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6 of 10 232012 713 AM































51 Host Profiles





















7 of 10 232012 713 AM






machines to start


VMFS














RDM limitations



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tipshtml



these


8 of 10 232012 713 AM













these





9 of 10 232012 713 AM













10 of 10 232012 713 AM

























should be tr

















why







15 What is a VLAN












ts on vSwitch














































Only HardDisk

















and how to fix it






a snapshot















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ster
















Ans--gt


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more information










accommodate


firewall ports




ANS--gt


communicate


hosts and


all cluster


VMware HA



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functional for


be



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you troubleshoot






20) How VDR works



prompt


environment










troubleshoot

















changes



























rebooted



etcresolvconf file






3Click Properties




hostname IP change











generated




commands




to rename them










Notes



settings


console (1003796)













(1010821)







make








Log File Locations

UFAD logs



Client logs



using the


on page 37)


40) Micro vMotion

41)

-------------------------------------------------------------------------------------------------------------------------

----------------------------------------------




physical hardware



the one for you











problem



it has one)














and reliability















machines


heartbeat NIC


NICs






reasonable option




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it











































encounter issues









phenomenal degree
















com






processor


A varlogsvmware










without re-booting







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and deal with it


reboot



it if needed






















details



details


















7


receive an error











25







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console













8














4 environment



ESX Servers












for cold cloning




request

9















disabled
































clients





proper distribution


































1 of 10 232012 713 AM















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change etc)







journaling

Limitations







18







luns



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2 of 10 232012 713 AM





channel adaptor


























storage















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3 of 10 232012 713 AM


















works











hardware platform





Linux guests




resource demands













hosts









4 of 10 232012 713 AM














iSCSI uses RJ45


IP Address








28 What is vmmemctl




ifconfig ndasha









(Only for Install)


(4)




8 for 301 (64 for 35)



37 What is Vmotion


5 of 10 232012 713 AM








3 -






















you use










market)




6 of 10 232012 713 AM































51 Host Profiles





















7 of 10 232012 713 AM






machines to start


VMFS














RDM limitations



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tipshtml



these


8 of 10 232012 713 AM













these





9 of 10 232012 713 AM













10 of 10 232012 713 AM

























should be tr

















why







15 What is a VLAN












ts on vSwitch














































Only HardDisk

















and how to fix it






a snapshot















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r ESX server



ster
















Ans--gt


network segment







more information










accommodate


firewall ports




ANS--gt


communicate


hosts and


all cluster


VMware HA



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functional for


be



include




























you troubleshoot






20) How VDR works



prompt


environment










troubleshoot

















changes



























rebooted



etcresolvconf file






3Click Properties




hostname IP change











generated




commands




to rename them










Notes



settings


console (1003796)













(1010821)







make








Log File Locations

UFAD logs



Client logs



using the


on page 37)


40) Micro vMotion

41)

-------------------------------------------------------------------------------------------------------------------------

----------------------------------------------




physical hardware



the one for you











problem



it has one)














and reliability















machines


heartbeat NIC


NICs






reasonable option




server




it











































encounter issues









phenomenal degree
















com






processor


A varlogsvmware










without re-booting







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work






and deal with it


reboot



it if needed


























25







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console













8














4 environment



ESX Servers












for cold cloning




request

9















disabled
































clients





proper distribution


































1 of 10 232012 713 AM















Features



change etc)







journaling

Limitations







18







luns



rd










2 of 10 232012 713 AM





channel adaptor


























storage















time






3 of 10 232012 713 AM


















works











hardware platform





Linux guests




resource demands













hosts









4 of 10 232012 713 AM














iSCSI uses RJ45


IP Address








28 What is vmmemctl




ifconfig ndasha









(Only for Install)


(4)




8 for 301 (64 for 35)



37 What is Vmotion


5 of 10 232012 713 AM








3 -






















you use










market)




6 of 10 232012 713 AM































51 Host Profiles





















7 of 10 232012 713 AM






machines to start


VMFS














RDM limitations



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tipshtml



these


8 of 10 232012 713 AM













these





9 of 10 232012 713 AM













10 of 10 232012 713 AM

























should be tr

















why







15 What is a VLAN












ts on vSwitch














































Only HardDisk

















and how to fix it






a snapshot















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r ESX server



ster
















Ans--gt


network segment







more information










accommodate


firewall ports




ANS--gt


communicate


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all cluster


VMware HA



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functional for


be



include




























you troubleshoot






20) How VDR works



prompt


environment










troubleshoot

















changes



























rebooted



etcresolvconf file






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hostname IP change











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to rename them










Notes



settings


console (1003796)













(1010821)







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Log File Locations

UFAD logs



Client logs



using the


on page 37)


40) Micro vMotion

41)

-------------------------------------------------------------------------------------------------------------------------

----------------------------------------------




physical hardware



the one for you











problem



it has one)














and reliability















machines


heartbeat NIC


NICs






reasonable option




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it











































encounter issues









phenomenal degree
















com






processor


A varlogsvmware










without re-booting







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and deal with it


reboot



it if needed


















8














4 environment



ESX Servers












for cold cloning




request

9















disabled
































clients





proper distribution


































1 of 10 232012 713 AM















Features



change etc)







journaling

Limitations







18







luns



rd










2 of 10 232012 713 AM





channel adaptor


























storage















time






3 of 10 232012 713 AM


















works











hardware platform





Linux guests




resource demands













hosts









4 of 10 232012 713 AM














iSCSI uses RJ45


IP Address








28 What is vmmemctl




ifconfig ndasha









(Only for Install)


(4)




8 for 301 (64 for 35)



37 What is Vmotion


5 of 10 232012 713 AM








3 -






















you use










market)




6 of 10 232012 713 AM































51 Host Profiles





















7 of 10 232012 713 AM






machines to start


VMFS














RDM limitations



No VMware snapshots
















tipshtml



these


8 of 10 232012 713 AM













these





9 of 10 232012 713 AM













10 of 10 232012 713 AM

























should be tr

















why







15 What is a VLAN












ts on vSwitch














































Only HardDisk

















and how to fix it






a snapshot















r












r ESX server



ster
















Ans--gt


network segment







more information










accommodate


firewall ports




ANS--gt


communicate


hosts and


all cluster


VMware HA



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functional for


be



include




























you troubleshoot






20) How VDR works



prompt


environment










troubleshoot

















changes



























rebooted



etcresolvconf file






3Click Properties




hostname IP change











generated




commands




to rename them










Notes



settings


console (1003796)













(1010821)







make








Log File Locations

UFAD logs



Client logs



using the


on page 37)


40) Micro vMotion

41)

-------------------------------------------------------------------------------------------------------------------------

----------------------------------------------




physical hardware



the one for you











problem



it has one)














and reliability















machines


heartbeat NIC


NICs






reasonable option




server




it











































encounter issues









phenomenal degree
















com






processor


A varlogsvmware










without re-booting







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work






and deal with it


reboot



it if needed

















for cold cloning




request

9















disabled
































clients





proper distribution


































1 of 10 232012 713 AM















Features



change etc)







journaling

Limitations







18







luns



rd










2 of 10 232012 713 AM





channel adaptor


























storage















time






3 of 10 232012 713 AM


















works











hardware platform





Linux guests




resource demands













hosts









4 of 10 232012 713 AM














iSCSI uses RJ45


IP Address








28 What is vmmemctl




ifconfig ndasha









(Only for Install)


(4)




8 for 301 (64 for 35)



37 What is Vmotion


5 of 10 232012 713 AM








3 -






















you use










market)




6 of 10 232012 713 AM































51 Host Profiles





















7 of 10 232012 713 AM






machines to start


VMFS














RDM limitations



No VMware snapshots
















tipshtml



these


8 of 10 232012 713 AM













these





9 of 10 232012 713 AM













10 of 10 232012 713 AM

























should be tr

















why







15 What is a VLAN












ts on vSwitch














































Only HardDisk

















and how to fix it






a snapshot















r












r ESX server



ster
















Ans--gt


network segment







more information










accommodate


firewall ports




ANS--gt


communicate


hosts and


all cluster


VMware HA



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functional for


be



include




























you troubleshoot






20) How VDR works



prompt


environment










troubleshoot

















changes



























rebooted



etcresolvconf file






3Click Properties




hostname IP change











generated




commands




to rename them










Notes



settings


console (1003796)













(1010821)







make








Log File Locations

UFAD logs



Client logs



using the


on page 37)


40) Micro vMotion

41)

-------------------------------------------------------------------------------------------------------------------------

----------------------------------------------




physical hardware



the one for you











problem



it has one)














and reliability















machines


heartbeat NIC


NICs






reasonable option




server




it











































encounter issues









phenomenal degree
















com






processor


A varlogsvmware










without re-booting







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and deal with it


reboot



it if needed







































clients





proper distribution


































1 of 10 232012 713 AM















Features



change etc)







journaling

Limitations







18







luns



rd










2 of 10 232012 713 AM





channel adaptor


























storage















time






3 of 10 232012 713 AM


















works











hardware platform





Linux guests




resource demands













hosts









4 of 10 232012 713 AM














iSCSI uses RJ45


IP Address








28 What is vmmemctl




ifconfig ndasha









(Only for Install)


(4)




8 for 301 (64 for 35)



37 What is Vmotion


5 of 10 232012 713 AM








3 -






















you use










market)




6 of 10 232012 713 AM































51 Host Profiles





















7 of 10 232012 713 AM






machines to start


VMFS














RDM limitations



No VMware snapshots
















tipshtml



these


8 of 10 232012 713 AM













these





9 of 10 232012 713 AM













10 of 10 232012 713 AM

























should be tr

















why







15 What is a VLAN












ts on vSwitch














































Only HardDisk

















and how to fix it






a snapshot















r












r ESX server



ster
















Ans--gt


network segment







more information










accommodate


firewall ports




ANS--gt


communicate


hosts and


all cluster


VMware HA



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functional for


be



include




























you troubleshoot






20) How VDR works



prompt


environment










troubleshoot

















changes



























rebooted



etcresolvconf file






3Click Properties




hostname IP change











generated




commands




to rename them










Notes



settings


console (1003796)













(1010821)







make








Log File Locations

UFAD logs



Client logs



using the


on page 37)


40) Micro vMotion

41)

-------------------------------------------------------------------------------------------------------------------------

----------------------------------------------




physical hardware



the one for you











problem



it has one)














and reliability















machines


heartbeat NIC


NICs






reasonable option




server




it











































encounter issues









phenomenal degree
















com






processor


A varlogsvmware










without re-booting







compatibility





















work






and deal with it


reboot



it if needed
















































1 of 10 232012 713 AM















Features



change etc)







journaling

Limitations







18







luns



rd










2 of 10 232012 713 AM





channel adaptor


























storage















time






3 of 10 232012 713 AM


















works











hardware platform





Linux guests




resource demands













hosts









4 of 10 232012 713 AM














iSCSI uses RJ45


IP Address








28 What is vmmemctl




ifconfig ndasha









(Only for Install)


(4)




8 for 301 (64 for 35)



37 What is Vmotion


5 of 10 232012 713 AM








3 -






















you use










market)




6 of 10 232012 713 AM































51 Host Profiles





















7 of 10 232012 713 AM






machines to start


VMFS














RDM limitations



No VMware snapshots
















tipshtml



these


8 of 10 232012 713 AM













these





9 of 10 232012 713 AM













10 of 10 232012 713 AM

























should be tr

















why







15 What is a VLAN












ts on vSwitch














































Only HardDisk

















and how to fix it






a snapshot















r












r ESX server



ster
















Ans--gt


network segment







more information










accommodate


firewall ports




ANS--gt


communicate


hosts and


all cluster


VMware HA



configuration


functional for


be



include




























you troubleshoot






20) How VDR works



prompt


environment










troubleshoot

















changes



























rebooted



etcresolvconf file






3Click Properties




hostname IP change











generated




commands




to rename them










Notes



settings


console (1003796)













(1010821)







make








Log File Locations

UFAD logs



Client logs



using the


on page 37)


40) Micro vMotion

41)

-------------------------------------------------------------------------------------------------------------------------

----------------------------------------------




physical hardware



the one for you











problem



it has one)














and reliability















machines


heartbeat NIC


NICs






reasonable option




server




it











































encounter issues









phenomenal degree
















com






processor


A varlogsvmware










without re-booting







compatibility





















work






and deal with it


reboot



it if needed





















18







luns



rd










2 of 10 232012 713 AM





channel adaptor


























storage















time






3 of 10 232012 713 AM


















works











hardware platform





Linux guests




resource demands













hosts









4 of 10 232012 713 AM














iSCSI uses RJ45


IP Address








28 What is vmmemctl




ifconfig ndasha









(Only for Install)


(4)




8 for 301 (64 for 35)



37 What is Vmotion


5 of 10 232012 713 AM








3 -






















you use










market)




6 of 10 232012 713 AM































51 Host Profiles





















7 of 10 232012 713 AM






machines to start


VMFS














RDM limitations



No VMware snapshots
















tipshtml



these


8 of 10 232012 713 AM













these





9 of 10 232012 713 AM













10 of 10 232012 713 AM

























should be tr

















why







15 What is a VLAN












ts on vSwitch














































Only HardDisk

















and how to fix it






a snapshot















r












r ESX server



ster
















Ans--gt


network segment







more information










accommodate


firewall ports




ANS--gt


communicate


hosts and


all cluster


VMware HA



configuration


functional for


be



include




























you troubleshoot






20) How VDR works



prompt


environment










troubleshoot

















changes



























rebooted



etcresolvconf file






3Click Properties




hostname IP change











generated




commands




to rename them










Notes



settings


console (1003796)













(1010821)







make








Log File Locations

UFAD logs



Client logs



using the


on page 37)


40) Micro vMotion

41)

-------------------------------------------------------------------------------------------------------------------------

----------------------------------------------




physical hardware



the one for you











problem



it has one)














and reliability















machines


heartbeat NIC


NICs






reasonable option




server




it











































encounter issues









phenomenal degree
















com






processor


A varlogsvmware










without re-booting







compatibility





















work






and deal with it


reboot



it if needed
















channel adaptor


























storage















time






3 of 10 232012 713 AM


















works











hardware platform





Linux guests




resource demands













hosts









4 of 10 232012 713 AM














iSCSI uses RJ45


IP Address








28 What is vmmemctl




ifconfig ndasha









(Only for Install)


(4)




8 for 301 (64 for 35)



37 What is Vmotion


5 of 10 232012 713 AM








3 -






















you use










market)




6 of 10 232012 713 AM































51 Host Profiles





















7 of 10 232012 713 AM






machines to start


VMFS














RDM limitations



No VMware snapshots
















tipshtml



these


8 of 10 232012 713 AM













these





9 of 10 232012 713 AM













10 of 10 232012 713 AM

























should be tr

















why







15 What is a VLAN












ts on vSwitch














































Only HardDisk

















and how to fix it






a snapshot















r












r ESX server



ster
















Ans--gt


network segment







more information










accommodate


firewall ports




ANS--gt


communicate


hosts and


all cluster


VMware HA



configuration


functional for


be



include




























you troubleshoot






20) How VDR works



prompt


environment










troubleshoot

















changes



























rebooted



etcresolvconf file






3Click Properties




hostname IP change











generated




commands




to rename them










Notes



settings


console (1003796)













(1010821)







make








Log File Locations

UFAD logs



Client logs



using the


on page 37)


40) Micro vMotion

41)

-------------------------------------------------------------------------------------------------------------------------

----------------------------------------------




physical hardware



the one for you











problem



it has one)














and reliability















machines


heartbeat NIC


NICs






reasonable option




server




it











































encounter issues









phenomenal degree
















com






processor


A varlogsvmware










without re-booting







compatibility





















work






and deal with it


reboot



it if needed



























time






3 of 10 232012 713 AM


















works











hardware platform





Linux guests




resource demands













hosts









4 of 10 232012 713 AM














iSCSI uses RJ45


IP Address








28 What is vmmemctl




ifconfig ndasha









(Only for Install)


(4)




8 for 301 (64 for 35)



37 What is Vmotion


5 of 10 232012 713 AM








3 -






















you use










market)




6 of 10 232012 713 AM































51 Host Profiles





















7 of 10 232012 713 AM






machines to start


VMFS














RDM limitations



No VMware snapshots
















tipshtml



these


8 of 10 232012 713 AM













these





9 of 10 232012 713 AM













10 of 10 232012 713 AM

























should be tr

















why







15 What is a VLAN












ts on vSwitch














































Only HardDisk

















and how to fix it






a snapshot















r












r ESX server



ster
















Ans--gt


network segment







more information










accommodate


firewall ports




ANS--gt


communicate


hosts and


all cluster


VMware HA



configuration


functional for


be



include




























you troubleshoot






20) How VDR works



prompt


environment










troubleshoot

















changes



























rebooted



etcresolvconf file






3Click Properties




hostname IP change











generated




commands




to rename them










Notes



settings


console (1003796)













(1010821)







make








Log File Locations

UFAD logs



Client logs



using the


on page 37)


40) Micro vMotion

41)

-------------------------------------------------------------------------------------------------------------------------

----------------------------------------------




physical hardware



the one for you











problem



it has one)














and reliability















machines


heartbeat NIC


NICs






reasonable option




server




it











































encounter issues









phenomenal degree
















com






processor


A varlogsvmware










without re-booting







compatibility





















work






and deal with it


reboot



it if needed





















works











hardware platform





Linux guests




resource demands













hosts









4 of 10 232012 713 AM














iSCSI uses RJ45


IP Address








28 What is vmmemctl




ifconfig ndasha









(Only for Install)


(4)




8 for 301 (64 for 35)



37 What is Vmotion


5 of 10 232012 713 AM








3 -






















you use










market)




6 of 10 232012 713 AM































51 Host Profiles





















7 of 10 232012 713 AM






machines to start


VMFS














RDM limitations



No VMware snapshots
















tipshtml



these


8 of 10 232012 713 AM













these





9 of 10 232012 713 AM













10 of 10 232012 713 AM

























should be tr

















why







15 What is a VLAN












ts on vSwitch














































Only HardDisk

















and how to fix it






a snapshot















r












r ESX server



ster
















Ans--gt


network segment







more information










accommodate


firewall ports




ANS--gt


communicate


hosts and


all cluster


VMware HA



configuration


functional for


be



include




























you troubleshoot






20) How VDR works



prompt


environment










troubleshoot

















changes



























rebooted



etcresolvconf file






3Click Properties




hostname IP change











generated




commands




to rename them










Notes



settings


console (1003796)













(1010821)







make








Log File Locations

UFAD logs



Client logs



using the


on page 37)


40) Micro vMotion

41)

-------------------------------------------------------------------------------------------------------------------------

----------------------------------------------




physical hardware



the one for you











problem



it has one)














and reliability















machines


heartbeat NIC


NICs






reasonable option




server




it











































encounter issues









phenomenal degree
















com






processor


A varlogsvmware










without re-booting







compatibility





















work






and deal with it


reboot



it if needed
























hosts









4 of 10 232012 713 AM














iSCSI uses RJ45


IP Address








28 What is vmmemctl




ifconfig ndasha









(Only for Install)


(4)




8 for 301 (64 for 35)



37 What is Vmotion


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41)

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8 for 301 (64 for 35)



37 What is Vmotion


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41)

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41)

-------------------------------------------------------------------------------------------------------------------------

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41)

-------------------------------------------------------------------------------------------------------------------------

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41)

-------------------------------------------------------------------------------------------------------------------------

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40) Micro vMotion

41)

-------------------------------------------------------------------------------------------------------------------------

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40) Micro vMotion

41)

-------------------------------------------------------------------------------------------------------------------------

----------------------------------------------




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on page 37)


40) Micro vMotion

41)

-------------------------------------------------------------------------------------------------------------------------

----------------------------------------------




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on page 37)


40) Micro vMotion

41)

-------------------------------------------------------------------------------------------------------------------------

----------------------------------------------




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on page 37)


40) Micro vMotion

41)

-------------------------------------------------------------------------------------------------------------------------

----------------------------------------------




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on page 37)


40) Micro vMotion

41)

-------------------------------------------------------------------------------------------------------------------------

----------------------------------------------




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on page 37)


40) Micro vMotion

41)

-------------------------------------------------------------------------------------------------------------------------

----------------------------------------------




physical hardware



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on page 37)


40) Micro vMotion

41)

-------------------------------------------------------------------------------------------------------------------------

----------------------------------------------




physical hardware



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work






and deal with it


reboot



it if needed















































encounter issues









phenomenal degree
















com






processor


A varlogsvmware










without re-booting







compatibility





















work






and deal with it


reboot



it if needed


















processor


A varlogsvmware










without re-booting







compatibility





















work






and deal with it


reboot



it if needed




























work






and deal with it


reboot



it if needed
















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