creating virtual infrastructure machines
TRANSCRIPT
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2009 VMware Inc. All rights reserved
Title of PresentationPresented by:
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3 Confidential
Creating Virtual Machines
Virtual machines are a core component of a virtual infrastructure.
VMware vSphere includes to the ability use templates to quickly
provision virtual machines. A template is created by creating,
configuring, and testing a virtual machine, and then converting it to
template format. Templates reduce deployment time and costly
mistakes when you deploy additional virtual machines.
First.. A look at the infrastructure.
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Using vSphere
vSphere provides the foundationfor any virtual datacenter small,
medium, or large:
Management services:
VMware vCenter Suite
Application services:
For availability, security, scalability Infrastructure services:
VMware ESX/ESXi
vSphere also provides the majorbuilding blocks for VMware
vCloud:
Infrastructure, platform, and
software services on demand
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What Is Virtualization?
Virtualization is a technology thattransforms hardware into software.
Virtualization allows you to run multipleoperating systems as virtual machineson a single computer.
Each copy of an operating system is
installed into a virtual machine.
Virtualization is not:
Simulation
Emulation
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Host Operating SystemBased Virtualization
A host-based virtualization system requires an operating system
(such as Windows or Linux) to be installed on the computer.
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Hypervisor Architecture
A virtualization layer is installed. It uses either a hosted or a
bare-metal hypervisor architecture.
hosted or
bare-metal
architecture
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What Is a Virtual Machine?
virtual machine
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What Is a Virtual Machine?
From the users perspective, avirtual machine is a softwareplatform that, like a physicalcomputer, runs an operatingsystem and applications.
From the hypervisorsperspective, a virtual machine isa discrete set of files. Main files:
Configuration file
Virtual disk file
NVRAM settings file
Log file
virtual machine
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Why Use Virtual Machines?
Easy to move and copy: Encapsulated into files
Independent of physical hardware
Easy to manage:
Isolated from other virtual machines
Insulated from hardware changes
Provides the ability to support
legacy applications
Allows servers to be consolidated
Virtual machinePhysical machine
Difficult to move or copyBound to a specific set ofhardware components
Often has a short life cycle
Requires personal contact
to upgrade hardware
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Virtual Machine Hardware
Up to 4CD-ROMs
Up to 3 ports Up to 4 ports
110 NICs
14 SCSI adapters;
115 devices per adapter
Up to255GBRAM
1 floppy controllerUp to 2 floppy
drives
VM chipset1 CPU (up to 8
CPUswith VMwareVirtual SMP)
1 IDEcontroller
Virtual
machinehardware isscalableenough tomeet most
business andapplicationneeds.
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Centralized Virtual Machine Management
Manage a virtualmachine using itsvirtual machineconsole:
Send power changes
to virtual machine.
Access virtual
machines guest
operating system.
Send Ctrl+Alt+Del to
guest operating
system.
VM console
VMconsole
icon
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Fast, Flexible Guest OS Installations
local
VM console
virtual machine
Install from ISO image to virtual disk.
Configure a datastore with a library of ISOimages for easy virtual machinedeployment and application installation.
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Enhanced Virtual Machine Performance
VMware Tools enhances
performanceand improve managementof a virtual machine.
Features include:
Virtual machine heartbeat
Improved mouse movement
Ability to gracefully shut downvirtual machine
VMwareToolsicon
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Reducing Virtual Machine Deployment Time
A template is a VMware
vCenter Server featureused to create and provisionnew virtual machines.
A template is a masterimage that typicallyincludes a guest operatingsystem, a set of applications,and a specific virtualmachine configuration.
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Creating a Template
Clone virtual machine totemplate.
Virtual machine can either bepowered on or powered off.
Convert virtual machine totemplate.
Virtual machine must be powered
off.
Clone an existing template.
Select template in inventoryfirst.
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Deploying a Virtual Machine from a Template
To deploy a virtual machine from a template, provide such
information as the virtual machine name, inventory location,host, datastore, and guest operating system customizationdata.
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Deploying Virtual Machines Across Datacenters
Virtual machinedeployment is allowed
across datacenters.
For example, deploy
from a template located
in one datacenter to a
virtual machine in a
different datacenter.
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Storage Overview
storagetechnology
datastoretypes
VMwarevStorage
VMFSNFS
LocallyAttached
FibreChannel
iSCSI NAS
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Datastores
A datastore is a logical storageunit that can use disk space on
one physical device or one diskpartition, or span severalphysical devices.
Types of datastores:
VMFS
Network File System (NFS)
Datastores are used to holdvirtual machines, templates, andISO images.
A VMFS datastore can also holda raw device mapping (RDM),which is used to access rawdata.
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VMFS
VMFS:
Allows concurrent access to
shared storage
Can be dynamically expanded
Can use an 8MB block size,
good for storing large virtual
disk files
Uses subblock addressing,
good for storing small files
Provides on-disk, block-level
locking
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RDM
An RDM is a mapping filein a VMFS volume thatacts as a proxy for a rawphysical device.
A raw disk can be usedfor existing data, virtualmachine clustering, andstorage array snapshots.
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More efficient storage utilization:
Virtual disk allocation 140GB
Available datastore capacity 100GB
Used storage capacity 80GB
vStorage Virtual Disk Thin Provisioning
Virtual machine disks consume only
the amount of capacity needed.A virtual machine sees the fullallocated disk size at all times.You can mix thick and thin formats.Full reporting and alerts help manageallocations and capacity.
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Demonstration:
Creating new Virtual Machines
Deploying Templates
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Key Points
A virtual machine is a set of virtual hardware on which a supported guest
operating system and its applications run.
A template is a master image that typically includes a guest operating
system, a set of applications, and a specific virtual machine configuration.
Deploying virtual machines from a template provides a fast, easy, scalable
method for creating virtual machines.