Controlling where Secondary FT VM is spawned

[dtracey]

Hi Chaps,

Is there a way to control which subset of hosts within a cluster can be used for a particular VM that is protected by Fault Tolerance?

Does the secondary VM respect host affinity rules?

The example is i have an 8 node cluster and want to protect vCenter with FT, but only want it to be able to run on the first 4 hosts as the second 4 are reserved for a particular application / service.

Not near the lab today so just thought i'd ask.

Cheers,

Dan

[vmroyale]

Hello.

I haven't tried it, but it looks like the VM-Host Affinity rule might work.

"If you use affinity rules with a pair of VMware FT virtual machines, a VM-VM affinity rule applies to the Primary FT VM only, while a VM–Host Affinity rule applies to both the Primary FT VM and its Secondary FT VM." - from http://www.vmware.com/files/pdf/techpaper/VMW-Whats-New-vSphere41-HA.pdf

Good Luck!

[rickardnobel]

It will not be enough to just know where the secondary FT vm is running? After enabling FT on a VM you should be able to see where the secondary are and to also move it to a suitable host if necessary.