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Server 2012 r2 - Using 2 hyper v hostservers with SMB

I am wanting to have hyperv clustering on 2 r720's using SMB local storage. Is it possible to do this setup without an another stand alone fileserver?

My ideal scenario is to have 2 hostservers connected to eachother with no standalone fileserver for the shared drives. Is it possible to have the VM's replicate across both server in case one server crashes?
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Larry Kiterling
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Larry Kiterling
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Cliff GaliherCommented:
No, this is not possible. While 2012 does now support SMB as a storage option for a hyper-v failover cluster, the hyper-v host cannot also be a fileserver.  There is also no replication. Like any failover cluster, the storage is a shared-access model where multiple nodes access the *same* storage.

You can look into hyper-v replica, but that is not real-time replication so there is a window for data loss if a failure occurs.
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Larry KiterlingAuthor Commented:
That's what i gathered. What options do i have if i have 2 host servers and big enough hard drives?  If i use hyper-v replica, will i just lose high availability? I don't mind not having real-time replication.
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Larry KiterlingAuthor Commented:
I'm having issues finding a tutorial on setting up a 2 node replica in one location.
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Cliff GaliherCommented:
In Hyper-V replica, they aren't nodes. So that is probably throwing off your searches.  TechNet has an article on setting up Hyper-V replica. You'll have some decisions to make regarding authentication methods, etc.
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Larry KiterlingAuthor Commented:
I found this but have one more question.  Could we use these replica hosts as load balancing? I have 12 Vm and want to use 6/6 on each server.

http://www.aidanfinn.com/?p=12147
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Cliff GaliherCommented:
Load balancing? No, not really. As Aidan rightly points out in that article, HV-Replica is not intended to be a replacement for a failover cluster, which is basically what you keep circling back around to.
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Larry KiterlingAuthor Commented:
If i have one VM that's failing, I won't be able to turn up just that one on the other?
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Cliff GaliherCommented:
Not in the way you are thinking, no. You'd have an intricate and fragile cross connection simply due to the fact that it isn't how replica was designed.
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Larry KiterlingAuthor Commented:
I'm thinking this. If i have 1 server hosting 6VM and replicate it across then have the second to have the other 6vm and have it replicate. It would be a poor mans disaster recovery but utilizing both hosts servers resources. Does this make sense?
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Cliff GaliherCommented:
As I said, it isn't designed to do that. That is never a setup I'd recommend. Too many moving parts, and the *worst* time to find out there are problems is in a real disaster recovery scenario. It all looks great on paper, but you'd only use it when a real outage happens, and when that occurs, you'll have enough on your plate that "fixing" Hyper-V Replica because you did an unsupported topology won't be high on your list...and you'll still be broken and down because you pursued this path.  

But hey, your job, your network. I am not going to keep repeating myself. This is the *fourth* time I've said no to basically the same thing...
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Larry KiterlingAuthor Commented:
Unfortunately this is the way my manager would like it setup. The management part of it is going to interesting. We have 12 VM on one host at the moment and the plan is to V to V using SCVMM 6 over to host2 and configure replication with 6 "primary" on each server. I agree cluster is a much better arrangement but in this crazy world.. sometime we have to bend.
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Cliff GaliherCommented:
Trees bend in the wind. But a tornado can still rip them out of the ground. And you can't bend them like a pretzel. Being flexible is laudable. But there are clearly limits, and it is my recommendation that this, indeed, crosses that line. I assume you came here and asked because you *wanted* expert advice. But it seems you really just wanted to validate your decision no matter what. And I won't do that. Good luck though.
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Larry KiterlingAuthor Commented:
I agree with everything you said. I got my expert advice and appreciate it! Higher ups are aware of this and want to move forward. It's insane to me to continue but I guess we'll see what happens.
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