I was trying to migrate a virtual machine from one ESX host to another and received following validation error, “Host CPU is incompatible with the virtual machine’s requirements at CPUID level 0x1 register ‘ecx’.”.
Host CPU Incompatibility
The solution to this issue is to enable Enhanced vMotion Capability (EVC) in your virtual cluster. Please follow following article on how to enable EVC.
Below steps would enable Enhanced vMotion Capability (EVC) on a cluster when vCenter Server is installed on a virtual machine running in the cluster. Inorder to use EVC, you must have ESX 3.5 Update 2 or higher. Following steps will work only if the vCenter Server virtual machine is running on an ESX host that is presenting the same CPU features as the ESX host in the new EVC cluster.
In this scenario I have 2 ESX hosts and vCenter Server is running on one of the ESX host. Both ESX hosts are connected to a NAS and store all virtual machine data. vSphere client is used to connect to vCenter Server. Continue reading