The following figure illustrates the supported configurations for Sun Cluster HA for NetBackup.
The NetBackup master server must be included in a cluster. NetBackup clients can be configured inside or outside a cluster. Backup devices can be attached only to slave servers, and neither can be included in a cluster.
Communication between NetBackup components occurs only through connections to the public network. In the case of a failover or switchover, the components under cluster control fail over or switch over to their backup nodes.