Replicate the application services across multiple nodes. Running the processes on multiple nodes balances the run-time services workload, and processes faster.

Run the primary instance and the backup instance of the application services on different nodes to ensure that even if one node goes down, another node continues to provide the service. Running the nodes on different host machines ensures that even if one host goes down, the nodes on other hosts will take over the activity.

Run the active grid manager instance and its backup instance on different hosts, to ensure that even if one host goes down, the grid manager process is still available.

Run the UM store on different hosts to ensure its high availability.

Ensure that the database and network are continually available to help in the overall high availability of the system.