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3 If the EVC Mode column does not appear, click the arrow in any column title, select Show/Hide
Columns, and select the EVC Mode check box.
The EVC Mode column shows the EVC modes of all virtual machines in the cluster or on the host.
Important The EVC Mode column displays the EVC mode defined at the virtual machine level.
However, if you do not configure per-VM EVC for a virtual machine, the virtual machine inherits the
EVC mode of its parent cluster or host. As a result, for all virtual machines that do not have per-VM
EVC configured, the EVC Mode column displays the inherited cluster-based EVC mode.
Important If the virtual machine is running in an EVC cluster, its EVC mode is determined in the
following manner.
Per-VM EVC Cluster-level EVC EVC Mode for the Virtual Machine
Enabled Enabled Enabled. The EVC Mode column
displays the EVC mode of the virtual
machine.
Disabled Enabled Enabled. The EVC Mode column
displays the EVC mode of the EVC
cluster.
If a virtual machine is powered off and is in an EVC cluster, theEVC Mode column always displays
the per-VM EVC mode.
Determine the EVC Mode that a Host Supports
By determining the EVC modes that the host can support, you can determine whether the host is
compatible with other hosts in an EVC cluster. For hosts to be included in the same EVC cluster, all the
hosts must support at least one common mode.
Procedure
1 Select a host in the inventory.
2 Click the Summary tab.
3 In the Configuration panel, expand EVC Mode.
The supported EVC modes are listed in order from the fewest to the greatest number of supported
features.
Prepare Clusters for AMD Processors Without 3DNow!
Newer generations of AMD processors do not include 3DNow! processor instructions. If hosts in a cluster
have different generations of AMD processors, some with 3DNow! instruction sets and some without, you
cannot successfully migrate virtual machines between the hosts. You must use an EVC mode or CPU
compatibility mask to hide the instructions.
vCenter Server and Host Management
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