Sun Java System Instant Messaging 7.2 Administration Guide

Availability in an Instant Messaging Server Pool

If a node in a server pool goes down, all currently connected clients are disconnected and the sessions and resources become unavailable. If you set up your deployment with load balancers, users can immediately reconnect and be directed by a load balancer to another node in the pool. When they do so, they will not need to recreate conferences or news channels as this information is shared between servers in the pool. In addition, one-to-one chat sessions can be continued after the user is directed to another node in the pool.