Which two conditions must exist on all hosts in the cluster of Enhanced vMotion Compatibility (EVC) is used? (Choose two)
The host must run all the same vSphere version.
The hosts must have the NXXD feature enabled in BIOS
The hosts must all belong to the same CPU family
The host must all be part of the same DRS Group
Hosts in an EVC cluster must meet certain requirements. To enable EVC on a cluster, the cluster must meet the following requirements:
* All virtual machines in the cluster that are running on hosts with a feature set greater than the EVC mode you intend to enable must be powered off or migrated out of the cluster before EVC is enabled.
* All hosts in the cluster must have CPUs from a single vendor, either AMD or Intel.
* All hosts in the cluster must be running ESX/ESXi 3.5 Update 2 or later.
* All hosts in the cluster must be connected to the vCenter Server system.
* All hosts in the cluster must have advanced CPU features, such as hardware virtualization support (AMD-V or Intel VT) and AMD No eXecute (NX) or Intel eXecute Disable (XD), enabled in the BIOS if they are available.
* All hosts in the cluster should be configured for vMotion. See Host Configuration for vMotion.
* All hosts in the cluster must have supported CPUs for the EVC mode you want to enable. Processors Supported in EVC Clusters lists the processor families supported for each EVC mode. To check EVC support for a specific processor or server model, see the VMware Compatibility Guide at
Any host added to an existing EVC-enabled cluster must also meet the requirements
Source: http://pubs.vmware.com/vsphere-50/index.jsp?topic=/com.vmware.vsphere.vcenterhost.doc_50/GUID- 3B5AF2B1-C534-4426-B97A-D14019A8010F.html