6.0.1

Table Of Contents
Procedure
1 Right-click a data center in the inventory and select New Cluster.
2 Type a name for the cluster.
3 Expand EVC and select a baseline CPU feature set from the EVC mode drop-down menu.
Select a CPU vendor and EVC mode appropriate for the hosts that you intend to add to the cluster.
4 (Optional) Enable DRS.
5 (Optional) Enable vSphere HA.
6 Click OK.
7 Select a host to move into the cluster.
If the host feature set is greater than the EVC mode that you enabled for the EVC cluster, power o all
the virtual machines on the host, or use vMotion to migrate them to another host.
8 Move the host into the cluster.
You can power on the virtual machines that are on the host, or migrate virtual machines into the cluster
with vMotion. The virtual machines must meet CPU compatibility requirements for the EVC mode of
the cluster.
You can now use vMotion to migrate virtual machines between dierent hosts in the cluster without
encountering CPU incompatibility issues.
Enable EVC on an Existing Cluster
Enable EVC on an existing cluster to ensure vMotion CPU compatibility between the hosts in the cluster.
Prerequisites
Verify that the hosts in the cluster meet the requirements listed in “EVC Requirements for Hosts,” on
page 130.
Procedure
1 Select the cluster in the inventory.
2 Power o all the virtual machines on the hosts with feature sets greater than the EVC mode.
3 Ensure that the cluster contains hosts with CPUs from only one vendor, either Intel or AMD.
4 Click the Manage tab, select VMware EVC and click Edit.
5 Enable EVC for the CPU vendor and feature set appropriate for the hosts in the cluster, and click OK.
6 Power on the virtual machines in the cluster to apply the EVC.
Change the EVC Mode for a Cluster
Congure EVC to ensure that virtual machine migrations between hosts in the cluster do not fail because of
CPU feature incompatibilities.
Several EVC approaches are available to ensure CPU compatibility:
n
If all the hosts in a cluster are compatible with a newer EVC mode, you can change the EVC mode of an
existing EVC cluster.
n
You can enable EVC for a cluster that does not have EVC enabled.
n
You can raise the EVC mode to expose more CPU features.
n
You can lower the EVC mode to hide CPU features and increase compatibility.
Chapter 13 Migrating Virtual Machines
VMware, Inc. 131