How to Enable High Availability for the Data Access Service
By default if your Operations Manager Operations console is connected to the Data Access service of one management server and the connection fails, it does not automatically failover to another management server in your management group. To enable high availability for your Operations Manager Data Access service, you can use Network Load Balancing (NLB). By configuring NLB, and connecting to the NLB cluster, if the connection fails, it will automatically be redirected to another management server.
To configure NLB
First, you must set up a virtual IP address. You must configure a static IP address for all nodes participating in the cluster and set up DNS. For more information, see. Configure a Static IP Address.