For additional capacity and for failover, you can cluster a group of Identity Servers and configure them to act as a single server. You can also create a cluster of Access Gateways and configure them to act as a single server. Clustering enables the following features:
Configuration Synchronization: You configure the cluster, and the configuration is synchronized to all members of the cluster.
User Session Sharing: Each cluster member can handle sessions held by another server in the cluster. After a session is established, the same member usually handles all requests for that session. However, if that cluster member is not available to handle a request, another member steps in and processes the request.
NOTE:This is not applicable for the Administration Console.
You can also provide fault tolerance for the configuration store on the Administration Console by installing secondary versions of the console. The following sections explain how to set up these components for fault tolerance: