Replication of a clustered VM to a host machine outside the cluster.

Server2012r2 cluster with two host nodes and many clustered VMs.

For backup purposes, many of the VMs are not only part of the cluster but also are being replicated to a node outside the cluster, elsewhere on the network.

Is this a bad thing to do?  Can running VM replication from within a cluster to an outside node a possible source of problems on the cluster?

Thanks.
gateguardAsked:
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VB ITSSpecialist ConsultantCommented:
If you're using the Hyper-V Replica feature then replication from a cluster to a standalone Hyper-V server is 100% supported, so no need to worry yourself there.

From the Hyper-V Replica Overview page on TechNet:
You can set up replication of Hyper-V virtual machines as long as you have any two physical Windows Server 2012 or Windows Server 2012 R2 servers which support the Hyper-V role. The two (or three, in the case of extended replication) servers can be physically co-located or in completely separate geographical locations. Either (or both of) the primary and Replica servers can be part of a failover cluster and mixed standalone and clustered environments are supported.
The only thing I would do is look at isolating the network traffic for replication if you have a large amount of data/VMs being replicated. Have a look at the Isolate network traffic for replication and Hyper-V Replica considerations sections on this page: http://technet.microsoft.com/en-au/library/dn550728.aspx
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Cliff GaliherCommented:
You'll need to run that by your replication vendor. They will tell you what is supported and what isn't. Your scenario is fully supported with the new Hyper-V Replica feature in 2012 for example. But there are many replication vendors.
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gateguardAuthor Commented:
I'm not sure what you mean by replication vendor. I'm using standard hyper-v replication in server2012r2.

Do you mean the hardware vendor?

Thanks for your help.
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gateguardAuthor Commented:
Thanks to both of you.
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