leveraging vmware esx in disaster recovery...

Leveraging VMWare ESX in Disaster Recovery Solutions

Jason Langone

Senior Server Engineer

Benefits of Virtualization

Why Virtualization is Advantageous:PortabilitySimplification of Recovery ProcessDecreased Recovery TimeSuccessful Recovery to Dissimilar Hardware

Case Study #1: Acme Health Services.

Case Study #1: Acme Health Services

Ways to ImproveVirtualize Tier 1 ServersBackup Virtual MachinesReduce Complexity of Recovery

Benefits of ImprovementReduction in Downtime to the BusinessReduction in Lost RevenueDecrease in Manpower Required

Case Study #1: Acme Health Services

Disaster Recovery Test #1Virtual Machine Domain ControllersPhysical versus Virtual Servers• Pitfalls During Physical Recovery• Ease of Virtual Recovery

0

5

10

15

20

25

30

35

Recovery Time

PhysicalVirtual

Hours

Case Study #1: Acme Health Services

Disaster Recovery Test #2Complete Virtualized RecoveryESXRanger for RecoveryDecreased FootprintDecreased Cost

05

10152025303540

Comparison: Test 1 vs. Test 2

Test 1Test 2

Hours

Case Study #1: Acme Health Services

0

5

10

15

20

25

30

35

Base Test 1 Test 2

PhysicalVirtualTotal

Hours

Case Study #2: Computershare.

Case Study #2: Computershare

Major Types of Failure

ESX Server - Online

ESX Server – Resource Planning

ESX Server - Failure

ESX Server - Recovery

SAN – Online

SAN - Failure

SAN - Recovery

Site – Online

Site – Recovery

Ways to Improve Recovery Process

Scripting AutomationExtend Recovery Capacity

Scripting Your Solution

Dancer’s Shell (DSH)Powerful Wrapper that Allows Multiple SSH ConnectionsRun One Command on Multitude of ServersGroup BasedConsecutive or Concurrent Execution

Configuring DSH

Download DSH Distribution and Libdshconfigdsh_0.25.4-1_i386.deblibdshconfig1_0.20.11-1_i386.deb

Install PackagesCreate GroupsEstablish Secure Key PairsSyntax:

dsh –g groupname –M –r ssh – commandE.G.• dsh –g farma –M –r ssh – service ntpd restart• dsh –g farmb -c –M –r ssh – cos-rescan.sh vmhba1

Scripting Your Solution

Server FailureExtract VMX FilesRegister Virtual MachinesPower On Virtual MachinesAnswer QuestionsExecution Time ~30 Seconds

Scripting Your Solution

Storage FailureRescan both HBAs per ServerExecution Time ~2 Minutes

Scripting Your Solution

Site FailureRescan HBAsVerify LUN ConnectivityExtract VMX FilesRegister Virtual MachinesPower On Virtual MachinesAnswer QuestionsExecution Time ~4 Minutes

Case Study #2: Computershare

Disaster Recovery Test #2Completely Scripted Recovery

0

20

40

60

80

100

120

Comparison: Test 1 vs. Test 2

Test 1Test 2

Minutes

Virtual Appliances

Pre-BuiltPre-ConfiguredPortableSelf Contained

Virtual Appliances

What is Ubuntu?FreeLinux Based Operating SystemOpen Source

ESX Recovery Center

Glade User Interface Builder

Recovery Center

Q&A

Jason.Langone@computershare.com

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