Enabling Vmware Enhanced Vmotion Compatibility Within A Cluster; Configuring The Virtual Flash Read Cache - Dell EMC VxBlock Systems 350 Administration Manual

Enabling VMware Enhanced vMotion Compatibility within a
cluster
Enable VMware Enhanced vMotion Compatibility (EVC) within a cluster.
About this task
The VMware EVC ensures vMotion compatibility for hosts in a cluster. VMware EVC verifies that all hosts
in a cluster present the same CPU feature set to the VMs, even if the CPUs on the hosts are different.
The EVC feature uses the Intel FlexMigration technology to mask processor features so that hosts can
present the feature set of an earlier generation of processors. This feature is required if hosts in a cluster
use both Cisco UCS C200 and C220 Rack Servers.
Before you begin
Before enabling VMware EVC on an existing cluster, ensure that the hosts in the cluster meet the
requirements listed in EVC Requirements in the VMware vSphere ESXi and vCenter Server
Documentation.
Procedure
1 You can optionally create an empty cluster. If you have already created a cluster, skip this step.
This is the least disruptive method of creating and enabling a VMware EVC cluster.
2 Select the cluster for which you want to enable VMware EVC.
3 If the VMs are running with more features than the EVC mode you intend to set, power off the
VMs, enable EVC, and migrate them back into the cluster after enabling VMware EVC.
4 Power off all the VMs on the hosts with feature sets greater than the VMware EVC mode.
5 Migrate the cluster's VMs to another host.
6 Edit the cluster settings and enable EVC.
7 Select the CPU vendor and feature set appropriate for the hosts in the cluster.
8 If you powered off and migrated Vms out of the cluster, power on the VMs in the cluster and
migrate the VMs back into the cluster.
Related information
VMware vSphere ESXi and vCenter Server Documentation

Configuring the Virtual Flash Read Cache

Configure the Virtual Flash Read Cache (VFRC) for each VM.
Procedure
1 Using the VMware vSphere web client, open the Hosts and Clusters view.
2 Right-click the VM and select Edit Settings.
89 | Managing virtualization