paultwo
Contributor
Contributor

vMotion CPU Mask

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I am trying to vMotion from an Intel Xeon Quad Core 2.5GHz E5420 to an Intel Xeon Dual Core 2.33GHz 5140.

I have enabled the no execute memory protection and the intel virtualization technology in the bios on both hosts.

From what I can see the vMotion compatibility groups are B and C. For B<-->C vMotion it tells me to apply SSE4.1 mask ()

The Mask for SSE4.1 is row ecx and the mask is -


-


-


0--- -


-


-


-


I have done that and tried to vMotion to another host and am getting the following message. Not sure what else to try.

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1 Solution

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MicahelMenne
Enthusiast
Enthusiast

It's in the DRS cluster settings.

Right click the cluster and go to Edit Settings..

You'll see a setting for VMware EVC.

If I remember right, this cannot be done live. The VMs need to be powered off. Try it. It won't let you turn on EVC it wants the VMs powered off.

EVC basically does the CPU masking for you.

I've currently got 3 Nehalem (Xeon 5500) servers and one Xeon 5400 host in my cluster. EVC works perfectly.

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MicahelMenne
Enthusiast
Enthusiast

I tried this as well initially. I never was successful at it. I ended up going to vCenter 4 and turning on Enhanced vMotion Compatibility.

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paultwo
Contributor
Contributor

I am using vSphere 4........

How do you turn on Enhanced vMotion compatibility?

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MicahelMenne
Enthusiast
Enthusiast

It's in the DRS cluster settings.

Right click the cluster and go to Edit Settings..

You'll see a setting for VMware EVC.

If I remember right, this cannot be done live. The VMs need to be powered off. Try it. It won't let you turn on EVC it wants the VMs powered off.

EVC basically does the CPU masking for you.

I've currently got 3 Nehalem (Xeon 5500) servers and one Xeon 5400 host in my cluster. EVC works perfectly.

View solution in original post

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paultwo
Contributor
Contributor

Perfect!

I will give that a try tonight.

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paultwo
Contributor
Contributor

Enhanced Vmotion works perfect.

Thanks!

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