VMware Cloud Community
Kedar_D
Enthusiast
Enthusiast

Protecting MSCS Virtual Machines

I am wondering if anyone has tried to configure SRM protection on MSCS VMs. Below links suggests following contents:

http://pubs.vmware.com/srm-51/index.jsp?topic=%2Fcom.vmware.srm.admin.doc%2FGUID-3EBBD9DA-CD14-45BB-...

Cluster across the boxes:

You can spread the MSCS cluster across a maximum of two ESXi Server instances. You can protect only one virtual machine node of any MSCS cluster on a single ESXi Server instance. You can have multiple MSCS node virtual machines running on an ESXi host, as long as they do not participate in the same MSCS cluster. When running MSCS in a cluster-across-boxes configuration, Site Recovery Manager only supports two-node MSCS clusters.

If I am not mistaken, the steps would be as follow:

  1. Create a MSCS cluster, VMs should spread across boxes (Maximum 2 VMs)
  2. Create a protection group consisting a single VM (Single MSCS cluster node)
  3. Create a recovery plan.

Can anyone confirm if this is tested and if yes what would be correct steps?

Kind Regards,

Kedar

------------------------------------------------------------ If you find this or any other answer useful please mark the answer as correct or helpful. Kedar http://virtualtechknow.wordpress.com/ ------------------------------------------------------------
Reply
0 Kudos
3 Replies
mal_michael
Commander
Commander

Hi,

Basically, what documentation states is that:

- Protected MSCS VMs (at primary site) should not run on same ESXi host.

- Recovered MSCS VMs (at DR site) should not be recovered on the same host.

To achieve this you may either create DRS rules or put manually put placeholder VMs at different hosts.

What are you trying to achieve? Do you want to protect both MSCS nodes or only one of them?

Since MSCS VMs use shared storage, you cannot create Protection Group for single VM, both of them will be included in same PG.

Michael.

Kedar_D
Enthusiast
Enthusiast

Hi Michael,

Thanks for reply.

I was trying to protect the MSCS cluster (2 VMs). When i did fail over, i was having an issue to mount  RDM lun on one of the recovered VM.

After some troubleshooting it was concluded that there was mismatch in HLU IDs of RDM luns which was resulting in different VML.

------------------------------------------------------------ If you find this or any other answer useful please mark the answer as correct or helpful. Kedar http://virtualtechknow.wordpress.com/ ------------------------------------------------------------
Reply
0 Kudos
bulatkaz
Contributor
Contributor

Hi Kedar_D,

Did you finally get it work?

Bulat.

Reply
0 Kudos