how virtualization tools change the...
TRANSCRIPT
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How Virtualization Tools Change the
Datacenter Jamie Butler, Director of IT – UC Davis School of Law
Dan Cantrell, Systems Group Manager – Duke University School of Law
Who we are
Terms
Goals
Agenda
Introduction
Virtualization
Hypervisor VMI Para-virtualization Bare Metal
Live Motion
Virtual Snapshots
Terms
Benefits
Case Study – UC Davis
Advanced Topics
Case Study – Duke
Questions
Agenda
Utilization
Legacy System Support
Transportation and Encapsulation
High Availability
Better Use of Clustering
Flexibility
Benefits
Case Study
Virtualization Infrastructure Chosen
400 Mrak Hall Drive; Davis, California 95616; t: 530.752.0243; f: 530.752.7279
VMware Infrastructure 3 Editions
400 Mrak Hall Drive; Davis, California 95616; t: 530.752.0243; f: 530.752.7279
Additional Management Software
400 Mrak Hall Drive; Davis, California 95616; t: 530.752.0243; f: 530.752.7279
400 Mrak Hall Drive; Davis, California 95616; t: 530.752.0243; f: 530.752.7279
Hardware Requirements
• 3 Dell 2950 Dual Quad Core w/ 16GB RAM
• 1 Dell 1950 Dual Core w/ 4GB RAM
• 1 MD3000i iSCSI Storage Arrage w/ 4.5TB Raw
• 2 PowerConnect 5424 iSCSI GigE Switches
400 Mrak Hall Drive; Davis, California 95616; t: 530.752.0243; f: 530.752.7279
400 Mrak Hall Drive; Davis, California 95616; t: 530.752.0243; f: 530.752.7279
Conversion/Migration Process • Initially 12 Machines
– Physical Servers and Virtual Machines – Mix of Web, File, Print, and Application
• Now 24 Machines – Web, File, Print, Application – Plus Backup Domain Controller, DNS, DHCP, and
Dev/Build Machines
• No SQL or Exchange
400 Mrak Hall Drive; Davis, California 95616; t: 530.752.0243; f: 530.752.7279
400 Mrak Hall Drive; Davis, California 95616; t: 530.752.0243; f: 530.752.7279
Average Consolidation Ratio • Before:
– Average of 5% CPU Utilization per box – Average of 25% Memory Utilization per box
• After: – Average of 10% CPU Utilization per box – Average of 40% Memory Utilization per box
• Better than 12 to 1 Consolidation Ratio
400 Mrak Hall Drive; Davis, California 95616; t: 530.752.0243; f: 530.752.7279
Caveats
• Issues with Private Network
• Virtual Network Switches w/ VLAN
Tagging
• Issues with VMotion across different CPUs
400 Mrak Hall Drive; Davis, California 95616; t: 530.752.0243; f: 530.752.7279
Costs • Initial:
– $45k - Hardware – $10k - VMWare Licenses and 1 yr Support – $2k – Windows Datacenter 2008 w/ SA – $15k – Training
• Ongoing: – $2k – VMWare Support – Hardware Replacement Cycle
400 Mrak Hall Drive; Davis, California 95616; t: 530.752.0243; f: 530.752.7279
Windows Licensing For Windows Server 2003 R2 Datacenter
Edition: Running Instances of the Server Software.
• For each server to which you have assigned the required number of software licenses, you may run on the licensed server, at any one time:
– One instance of the server software in the physical OSE, and
– Any number of instances of the server software in virtual OSEs (only one instance per virtual OSE).
• However, the total number of physical processors used by those OSEs cannot exceed the number of software licenses assigned to that server.
400 Mrak Hall Drive; Davis, California 95616; t: 530.752.0243; f: 530.752.7279
Support Services Feature Gold Support Hours of Operation 12 Hours/Day
Monday–Friday
Length of Service 1, 2 or 3 Years
Product Updates Yes
Product Upgrades Yes
Products Supported All Products (excluding VMware Fusion and VMware Player)
Method of Access Telephone/Web
Response Method Telephone/Email
Remote Support Yes
Access to VMware Web Site Yes
Access to VMware Discussion Forums and Knowledge Base Yes
Max Number of Support Administrators per Contract 4
Number of Support Requests Unlimited
Target Response Times Critical (Severity 1) Major (Severity 2) Minor (Severity 3) Cosmetic (Severity 4)
4 business hours 8 business hours 12 business hours 12 business hours
400 Mrak Hall Drive; Davis, California 95616; t: 530.752.0243; f: 530.752.7279
Moving Forward
• + More Memory
• Watch for Virtual Machine Sprawl
• Careful Patching/Restarting
400 Mrak Hall Drive; Davis, California 95616; t: 530.752.0243; f: 530.752.7279
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Advanced Topics
Live Virtual Machine Backups
Guest OS running native backup client
Point-in-Time VM snapshot
3rd Party tools for ASYNC replication
Disaster Recovery
Dissimilar hardware at DR site
Reduced capacity and cost at DR site
Automated failover tools (DNS, IP addrs, etc)
Virtualization Comparison Scenario
Mix of Windows and Unix
Highly available for production use
Hosted on 4 machines, 2 multi-core CPU’s each
Running 30 VM’s
Academic pricing
Business hours support
Pricing
Microsoft Hyper-V: $5600 + per incident support
VMWare ESX: Standard $7000 / Advanced $16000
Citrix XenServer: Enterprise $8400
Redhat Virtualization: $6000
Features
Citrix Xen MS Hyper-V Redhat KVM ESX
Live Migrate Yes Yes Yes Yes
Dynamic Provisioning
Yes Yes No Yes
Storage Migration
Yes No No Yes
Clustered Filesystem
No No GFS VMFS
Statistics No Yes No Yes
Site Replication
No Yes No Yes
Live VM backups
Hardware required
MS VSS based
Linux LVM based
VM based snapshot
Support
Microsoft Hyper-V is Microsoft support
VMWare and Citrix will solve the problem fast
Redhat can solve the problem in most cases
What about FREE?
Feature Citrix Xen Hyper-V RH KVM ESXi
Multi-pathing Free Difficult! Free Free
Live Migration
Free No Limited No
VM snapshots
Only forward No snapshots
Limited snapshots
Full snapshots
Guest OS support
Most Unix & Windows
Windows & Few Unix
Limited Windows & Unix
All OS’s
Memory Over subscribe
No No No Yes
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Duke University School of Law
Virtualization Project
Project Goals
Use existing budget
Repurpose existing hardware
Increase service reliability
Legacy host support
Hardware Layout
Resources & Links
Full Virtualization vs. Para Virtualization http://blog.taragana.com/index.php/archive/virtualization-technologies-full-virtualization-versus-para-virtualization/
http://www.vmware.com/interfaces/paravirtualization.html
Virtualization software comparisons http://www.itcomparison.com/Virtualization/VMwareesxivsHyperv/VMwareesxivsHyperv.htm
http://www.itcomparison.com/Virtualization/MShypervvsvi35/HyperVvsvmware35esx.htm
http://en.wikipedia.org/wiki/Comparison_of_platform_virtual_machines
http://www.vmware.com/pdf/hypervisor_performance.pdf
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