VMotion CPU Compatibility - Migrations Prevented Due to CPU Mismatch - How to Override Masks

This article provides information about overriding VMotion CPU compatibility restrictions between ESX hosts managed by VirtualCenter 2.x or vCenter Server 4.x. For information on overriding VMotion CPU compatibility restrictions between ESX hosts managed by VirtualCenter 1.x, see KB 1011354.

Warning: Unless indicated, VMware neither supports nor recommends modifying the VMotion constraints for CPU features used by applications, such as SSE3, because of the risk of application or guest operating system failure after migration. Experimental support is available for some masks in ESX 3.5 and later as noted. For more information on experimental support, see http://www.vmware.com/support/policies/experimental.html.