Guest showing old processor after vmotion

[JoeFromGlasgow]

I've noticed in one of our servers that the processor hasn't changed after a DRS initiated a vmotion. Its still showing the processor from the old host.

both hosts have intel Xeon processors but at diff speeds.

They all have the same version of vmware tools.

They are all using the same EVC mode.  Intel SandyBridge Generation

All the other servers seem to show the same processor, no matter what host they are on.

Any idea how to update server / guest ?

obv i'm a noob on ESX so all help appreciated.

Esx 5.5

[JoeFromGlasgow]

Resolution found here. VMware Knowledge Base

[msripada]

Can you share the source and destination processor specs info? If they are migrated from lower processor to higher processor speed and Guest OS showing the same lower version speed, my guess is that the ESXi host on destination has a power management setting enabled. Can you validate that please?

Thanks,

MS

[JoeFromGlasgow]

The original cluster had the EVC mode set to Haswell. The new cluster was set to SandyBridge.

The VM was Vmotioned to the new cluster. I assume the processor didnt change to refelect the new EVC mode.

When I powered off/On the processor had changed to the same aas the other VMs

Should VMs processors update when vmotioned onto another cluster ? (windows 2012)