vRealize Operations Manager supports high availability (HA) by enabling a replica node for the vRealize Operations Manager master node.

When present, an HA replica node can take over the functions that a master node provides. When a problem occurs with the master node, failover to the replica node is automatic and requires only two to three minutes of vRealize Operations Manager downtime. Data stored on the master node is always 100% backed up on the replica node. In addition, with HA enabled, the cluster can survive the loss of a data node without losing any data.

To enable HA, you must have another node deployed in addition to the master node. When you deploy nodes as virtual machines, deploy the replica node on different hardware than the master node so that backup is physically redundant.