A Tivoli® Storage Manager Version 7.1 client can automatically fail over to a target replication server, if the source replication server is unavailable.
To use automatic failover when node replication is in use, both the source and target replication servers and the client must be at V7.1. You can use only one failover server for each replicating node at any time. The failover server is the last server that a node successfully replicated to. The client can recover data from the target replication server, but it cannot store data during failover processing.