Multi Site Clustering for Hyper-V disaster recovery - Greg Shields
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Multi-Site Clustering for Hyper-V Disaster Recovery Greg Shields, MVP, vExpert Senior Partner Concentrated Technology www.ConcentratedTech.co m @ConcentratdGreg
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Transcript of Multi Site Clustering for Hyper-V disaster recovery - Greg Shields
Multi-Site Clusteringfor Hyper-VDisaster Recovery
Greg Shields, MVP, vExpertSenior PartnerConcentrated Technology
www.ConcentratedTech.com
@ConcentratdGreg
About the speaker
Administrator – Managed environments ranging from a few dozen to many thousands of users…
Consultant – Hands-on and Strategic… Speaker – TechMentor, Tech Ed, Windows Connections, MMS,
VMworld, ISACA, others… Analyst/Author – Fourteen books and counting… Columnist – TechNet Magazine, Redmond Magazine,
Windows IT Pro Magazine, TechTarget Online, others… All-around good guy…
Over 15 years of Windows experience
What Makes a Disaster?
It causes a server or an entire rack of servers to inadvertently and rapidly power down
Which of the following would you consider a disaster?
Interrupts the functionality of your datacenter for an extended period of time
It’s immediately ceasing all processing on that server
Impacts your datacenter and causes damage. That damage causes the entire processing of that datacenter to cease
It causes problems with a service, shutting down that service and preventing some action from occurring on the server
What Makes a Disaster?Which of the following would you consider a disaster?
It causes a server or an entire rack of servers to inadvertently and rapidly power down
It’s immediately ceasing all processing on that server
It causes problems with a service, shutting down that service and preventing some action from occurring on the serverJust a bad day…
What Makes a Disaster?
Your decision to “declare a disaster” and move to “disaster ops” is a major one
The technologies used for disaster protection are different than those used for high-availability• More complex• More expensive
Failover and failback processes involve more thought• You might not be able to just “fail back” with a click of a button
• Microsoft has not done a good job of explaining this fact!• Some Hyper-V hosts• Some networking and storage• Virtual machines that Live Migrate around
Multi-Site Hyper-V == Single-Site Hyper-VMulti-site Hyper-V looks very much the same as single-site Hyper-V
But there are some major differences too…
• VMs can Live Migrate across sites• Sites typically have different subnet arrangements• Data in the primary site must be replaced with the DR site• Clients need to know where your servers go!
Constructing Site-Proof Hyper-V: Three Things
Once you have these three things, layering Hyper-V atop is easy.
Storage mechanism
Replicationmechanism
Target Servers &
Cluster
At a very high level, Hyper-V disaster recovery is three things
Constructing Site-Proof Hyper-V: Three Things
Storage Device(s)
Replication Mechanism
Target Servers
PrimaryHyper-V Server
PrimaryHyper-V Server
Storage Device Storage Device
BackupHyper-V Server
BackupHyper-V Server
Backup Site
Thing 1: A Storage Mechanism
Typically, two SANs in two different locations
Backup SAN doesn’t necessarily need to be of the same size or speed as the primary SAN
Fibre Channel,iSCSI,FCoE,
heck JBOD
Similar modelor
manufacturer
Similarity proper
replication
Replicated ≠
Full data(not always)
DR – not for
everything!
DR Environments: Where Old SANs
Go To Die!
Want more?
See the rest and watch more training videos at www.backupacademy.com
