Failover Clustering with Hyper-V – Deployment Options

re: Failover Clustering with Hyper-V – Deployment Options

Symon Perriman MSFT — Tue, 21 Sep 2010 18:56:47 GMT

Hi Jorge,

Yes, it is possible to use 1 physical cluster and have a guest cluster running on it. However if you lose your physical/host cluster, you will also lose your guest cluster. The scenario above will enable you to lose either physical cluster and still keep your guest cluster, but both are supported and both give extremely high levels of availability.

Yes, Exchange 2007 SP1+ is supported with either guest or host clustering, but with some restrictions. See

technet.microsoft.com/.../cc794548(EXCHG.80).aspx for more information.

-Symon Perriman

re: Failover Clustering with Hyper-V – Deployment Options

japais — Tue, 21 Sep 2010 18:33:32 GMT

Hi! I have a question about guest + host clustering.

Is it possible to have a guest cluster on a single 2-node HyperV cluster? The deployment you showed, has guest clusters distributed along 2 physical HyperV clusters

The deployment would be something like:

- 2 clustered physical Windows Server 2008 R2 with HyperV.

- 2 clustered virtual machines running on the clustered HyperV, possibly each VM with affinity to different HyperV cluster nodes.

Another question. An Exchange 2010 virtualized environment is supported? Im planning on an architecture with 1 CAS and two clustered Mailbox servers...

Best regards,

Jorge Pais

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re: Failover Clustering with Hyper-V – Deployment Options

Symon Perriman MSFT — Wed, 06 Aug 2008 20:41:45 GMT

Hi Lidvar,

We are addressing this issue in a QFE which should be released in the next week or two. It will be available here: http://support.microsoft.com/kb/951308.

I will also add a blog post when it is available.

Thanks,

Symon Perriman

Program Manager

Clustering & HA

re: Failover Clustering with Hyper-V – Deployment Options

lidvar.kornberg@dnv.com — Fri, 25 Jul 2008 13:20:59 GMT

Hi,

I'm currently testing System Center Virtual Machine Manager 2008 together with a 3 node Win2008 cluster running Hyper-V. A big pain is that each VM in the cluster need their own disk resource. This is a big limitation as every time a new VM shall be created we need to do as follow:

1) Contact the SAN administrator to assign new small LUN to the cluster nodes.

2) Create a disk cluster resource

3) Then create a VM from the SCVMM2008 console

First of all this is too much work and delay when provisioning new VM's (it should be possible to provision a VM from a single point) and secondly we are unable to utilize the SAN disk's as we will end up with a lot of unused disk in each cluster disk resource.

I understand this to be a limitation in NTFS (?) as only one cluster node can access the same disk resource. Are there any plan in the future to remove this limitation so that several VM's in the cluster can share the same cluster disk resource and that the cluster nodes can access the same disk simultaniously.

This is one of the biggest disadvantages with Hyper-V compared to a VMware HA environment where this work fine.

best regards

Lidvar Kornberg

Senior System Engineer

Det Norske Veritas

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