Check out this great article on EVC… lots of great information and links!
VMware KB: Enhanced VMotion Compatibility (EVC) processor support: “Enhanced VMotion Compatibility (EVC) processor support
Enhanced VMotion Compatibility (EVC) simplifies VMotion compatibility issues across CPU generations. EVC automatically configures server CPUs with Intel FlexMigration or AMD-V Extended Migration technologies to be compatible with older servers. After EVC is enabled for a cluster in the VirtualCenter inventory, all hosts in that cluster are configured to present identical CPU features and ensure CPU compatibility for VMotion. The features presented by each host are determined by selecting a predefined EVC baseline. VirtualCenter does not permit the addition of hosts that cannot be automatically configured to be compatible with the EVC baseline.”
I found this cool link to whitebox with your ESX servers.. check it out!
Thanks to a fellow VMUG User (Vlad N)
ESX / ESXi 4.0 Whitebox HCL: “Motherboards and unsupported servers that work with ESX 4.0 and / or ESXi 4.0 Installable
Lasted updated – 2010.02.02″