Cant VMotion, Will HA succeed when host fail ?

[greyfuz]

So I have a cluster with 3 hosts licensed with essential plus.

But the problem is that i have a differrent proccessor type.

host 1 : proc E5-2640 v2

host 2 : proc E5-2640 v2 (master)

host 3 : proc E5-2640 v3

I cannot vmotion vm from host 1 or 2 to host 3 and vice versa

My question is will HA be operated succesfully when host 3 fail or host 2 fail ?

[senthilkumarms8]

yes, HA will function properly if any one of the host goes down. since HA will restart the VMs on another host so the new CPU family features will be applied for the VMs when they were restarted. however, i would recommend you to enable EVC on the cluster to get the vMotion benefit.

Refer the below documents for EVC

https://docs.vmware.com/en/VMware-vSphere/6.0/com.vmware.vsphere.vcenterhost.doc/GUID-E3F5BAFE-EB14-...

https://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=10131...

[Mattallford]

Yes. As HA essentially resets the VM on another host, it will pick up the new CPU ID and boot up without any issues.

Can you look at getting some down time on the workloads to get EVC enabled?

Cheers, Matt.

[Jitu211003]

Hi,

You will need to edit the cluster settings and edit EVC mode then select any compatible mode from drop down list.

When you select any EVC mode, it will show you any incompatible in bottom pan.

and from your question, HA will still work but you may not be able to do live vmotion.

In HA, VM will restart onto another host.