vCenter

Hello

I have Xeon Wolfdale E5440 2.83GHz 45nm Socket 775LGA Family 6 Model 7 ExtendedModel 17 Stepping A Revision E0

and
Xeon Wolfdale E5440 2.83GHz 45nm Socket 775LGA Family 6 Model 7 ExtendedModel 17 Stepping A Revision C0

Can I update Stepping A Revision C0 to E0??? (Any Intel Tool??)

Thanks and Regards

There is no way to permanently update the microcode of an Intel CPU.

However, Intel has implemented a mechanism for updating the microcode at system boot time, either through a computer's BIOS or a microcode update routine of the OS that boots on the machine.

For details see e.g. http://inertiawar.com/microcode/

Why are you asking this question?

- Andreas

Because I cant use VMOTION. I need update CPU

Any help?

Thank you peetz

Enable EVC on the cluster - it will force the presented stepping/revision to be the same for all hosts.  Its a feature designed exactly for this scenario.

As Matt pointed out you will want to enable EVC.

You should also check for differing BIOS versions and settings (NX-bit, VTd etc.), because this may also cause VMotion incompatibilities.

Finally, search for the exact error in the VMware KB to get a clue of what else to check.

Would a CPU revision difference between the two necessitate EVC and be the cause of vMotion not working?

Absolutely it can.

Thanks, I wasn't aware of this, I didn't expect the same processor number to have different instructions.  I can see now the E0 stepping has new XSAVE and XRSTORE instructions.

I dont understand

I have one procesor in E0 Stepping and other in C0 Stepping.... and I have one error to VMOTION: The CPUs are incompatibles

What is the solution??

Thanks and Regards

Do you have vCenter and are your hosts in a cluster?  If so you will need to enable Enhanced vMotion Compatibility (EVC) on the cluster with a common baseline to be able to vMotion between hosts.  Some more information on EVC here:

http://kb.vmware.com/kb/1003212

http://pubs.vmware.com/vsphere-51/index.jsp?topic=%2Fcom.vmware.vsphere.vcenterhost.doc%2FGUID-DE575FB9-24AE-4453-966B-5340B8147FC9.html