VMware ESX Server as a foundation for HA and DR for the Microsoft ...

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Architectural Considerations: Virtual NetworkingAlways purchase the most Ethernet portsthat you can affordVI3 has a limit of 8 physical portsUse port groups if you have a limitedamount of ports or your server haslimited expandabilityIf limited expandability, consider 4-portIntel Pro/1000 adaptersTwo or more ports should be teamed orload balanced to provide redundancy forcritical virtual switchesAssign ports across separate physicaladapters if possible• Only if they’re the same typeof adapterService console only requires one portunless you are performing backups fromthe service consoleYou may wish to dedicate two ports ifservice console is considered criticalHaving a separate port for VMotion willguarantee the best performance
Architectural Considerations: Microsoft WindowsIf you are performing hot backups or snapshots, make sure theyare consistentVMware snapshots are not application awareInconsistent VMs will either not function or potentially destroy yourActive Directory environment• Domain controllers• Live Communications Server• Exchange Server• SQL Server and any connected database application serverMicrosoft clustering is a good choice for application-level HA but storagemust be configured to support clustering (RDMs)If snapshots or mirroring is used on the SAN, an application agent mustreside within Windows guest OS to maintain data consistency
Page 1: VMware ESX Server as afoundation fo
Page 5: IntroductionA sample architecture f
Page 9 and 10: HA Layers: Application Level HASinc
Page 11 and 12: DR LayersDR is your insurance for s
Page 13 and 14: COOPContinuity of Operations allows
Page 15 and 16: Summary of HA/DR/COOP OptionsESXRan
Page 20 and 21: Summary of HA and COOP OptionsTechn
Page 22 and 23: Lessons LearnedHA, DR and COOP will

VMware ESX Server as a foundation for HA and DR for the Microsoft ...

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