Dell r710 vmotion issues

[AneetuPrakash]

Hi communities,

Have a esx 4.1 u2 cluster with some esxi4.1 hosts in it. I have an issue were i can vmotion between the esx hosts in the cluster but the esxi hosts cannot vmotion to the esx 4.1 hosts.

I get an error message saying the cpu's are different although they are not.

Any helps appreciated

[JCMorrissey]

This error message usually occurs if the hosts have different BIOS settings or even different BIOS versions.

see http://kb.vmware.com/kb/1029785

[admin]

Enable EVC mode on the cluster and then check. ESXi host server would have different CPU instructions compared to ESX host server.

[AneetuPrakash]

Thank you both i will check my settings in the meantime

[admin]

Please mark my post as "helpful" or "correct" if I've helped resolve or answered your query!

[JCMorrissey · Accepted solution]

Hi Aneetu,

I did a check there on one of the clusters we manage here and are running r710's - different BIOS's can cause these types of issues so definitely check the revision levels

[AneetuPrakash]

thanks you JC - can confirm upgradeing out BIOS fixed the issue here