6.7

Table Of Contents
5 From the VMware EVC Mode drop-down menu, select the baseline CPU feature set that you want to
enable for the cluster.
If you cannot select the EVC Mode, the Compatibility pane displays the reason, and the relevant
hosts for each reason.
6 Click OK.
Determine the EVC Mode of a Virtual Machine
The EVC mode of a virtual machine determines the CPU features that a host must have in order for the
virtual machine to power on and migrate. The EVC mode of a virtual machine is determined when the
virtual machine is powered on. In vSphere 6.7, the EVC mode of a virtual machine is independent from
the EVC mode that you configure for the cluster in which the virtual machine runs.
The EVC mode of a virtual machine is determined when the virtual machine is powered on. At power-on,
the virtual machine also determines the EVC mode of the cluster in which it is running. If the EVC mode
of a running virtual machine or the entire EVC cluster is raised, the virtual machine does not change its
EVC mode until it is powered off and powered on again. This means that the virtual machine does not use
any CPU features exposed by the new EVC mode until the virtual machine is powered off and powered
on again.
For example, consider a cluster that contains hosts with Intel Xeon 45 nm Core two processors that are
set to the Intel Merom Generation (Xeon Core 2) EVC mode. When you power on a virtual machine in this
cluster, it runs in the Intel Merom Generation (Xeon Core 2) EVC mode. If the EVC mode of the cluster is
raised to Intel Penryn Generation (Xeon 45 nm Core 2), the virtual machine remains at the lower Intel
Merom Generation (Xeon Core 2) EVC mode. To use any of the features exposed by the higher cluster
EVC mode, such as SSE4.1, you must power off the virtual machine and power it on again.
Procedure
1 In the vSphere Client, select a cluster or a host in the inventory.
2 Click the VMs tab.
A list of all virtual machines in the selected cluster or on the selected host appears.
vCenter Server and Host Management
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