To configure high availability (HA) in a clustered vSphere environment, follow these steps:
1. Create a cluster: First, create a cluster in vCenter Server by navigating to the Hosts and Clusters view and right-clicking the data center object. Select New Cluster and follow the wizard to create the cluster.
1. Enable HA: Once the cluster is created, enable HA by right-clicking the cluster and selecting Edit Settings. Under the vSphere HA tab, select Turn On vSphere HA and choose the admission control policy.
1. Configure network settings: Configure network settings for HA by selecting the Management Network option under the vSphere HA tab. Ensure that the network settings are appropriate for your environment.
1. Configure datastore heartbeating: Configure datastore heartbeating under the vSphere HA tab by selecting Datastore Heartbeating and choosing the appropriate datastores to use.
1. Configure host isolation response: Configure host isolation response under the vSphere HA tab by selecting Host Isolation Response and choosing the appropriate response for your environment.
1. Configure VM monitoring: Configure VM monitoring under the vSphere HA tab by selecting VM Monitoring and choosing the appropriate settings for your environment.
1. Test the configuration: Test the configuration by shutting down one of the hosts in the cluster and ensuring that the VMs fail over to another host.
By following these steps, you can configure high availability (HA) in a clustered vSphere environment, ensuring that your virtual machines remain available in the event of a host failure.
