To enable your cluster for vSphere HA, first create an empty cluster. After you plan the resources and networking architecture of your cluster, use the vSphere Web Client to add hosts to the cluster and specify the cluster's vSphere HA settings.
Connect vSphere Web Client to vCenter Server using an account with cluster administrator permissions.
Verify that all virtual machines and their configuration files reside on shared storage.
Verify that the hosts are configured to access the shared storage so that you can power on the virtual machines using different hosts in the cluster,
Verify that hosts are configured to have access to the virtual machine network.
Use redundant management network connections for vSphere HA. For information about setting up network redundancy, see Network Path Redundancy. You should also configure hosts with at least two datastores to provide redundancy for vSphere HA datastore heartbeating.
- In the vSphere Web Client browse to the Datacenter where you want the cluster to reside.
- Click Create a Cluster .
- Complete the New Cluster wizard.
Do not turn on vSphere HA (or DRS).
- Click OK to close the wizard and create the cluster.
You have created an empty cluster.
- Based on your plan for the resources and networking architecture of the cluster, use the vSphere Web Client to add hosts to the cluster.
- Browse to the cluster.
- Click the Manage tab and click Settings.
- Select vSphere HA and click Edit.
- Select Turn ON vSphere HA.
- Configure the vSphere HA settings as appropriate for your cluster.
- Click OK.
You have a configured vSphere HA cluster, populated with hosts. See Configuring vSphere HA Cluster Settings in the vSphere Web Client.
A vSphere HA-enabled cluster is a prerequisite for Fault Tolerance.