Redundant OpenSSO Enterprise servers and Policy Agents are installed for basic load-balancing. Additionally, you must manually configure each instance for system failover and session failover.
All OpenSSO Enterprise servers must share the same configuration data. This can be achieved by setting up configuration data replication among multiple instances of OpenDS, or by configuring each OpenSSO Enterprise server to point to the same instance of Sun Directory Server.
You can configure system failover at either the OpenSSO Enterprise Policy Agent or at the OpenSSO Enterprise Client SDK.
When configuring session failover, you must deploy Java Message Queue and the Berkeley Database on a machine other than the one hosting the OpenSSO Enterprise servers. You can configure a single Message Queue with a single Berkeley Database, or you can configure multiple instance of both.