About NetBackup client in a cluster
You may choose to install only the NetBackup client in a cluster. In this configuration, you can back up the data from the cluster across the network to a separate NetBackup server. In this situation the NetBackup-specific configuration tasks for tape devices, media, and so on, are separate from the setup and maintenance of the cluster itself. However, the NetBackup client itself cannot fail over.
To install the NetBackup client on an WSFC, VCS, SunCluster , Service Guard cluster, or HACMP cluster
The NetBackup client is installed on a cluster as it is in a non-clustered environment. Refer to the Veritas NetBackup Installation Guide for information on how to install the NetBackup client. On Windows systems, you may have problems with name resolution when you try to back up data on the cluster. (This data can be either local data or shared data.) Consider setting the Required Network Interface parameter for each client to the fully qualified name of the node where the NetBackup client is installed.