About the license for NetBackup for SQL Server
The NetBackup for SQL Server agent is installed with the NetBackup client software. No separate installation is required. A valid license for the agent must exist on the master server.
More information is available on how to add licenses.
See the NetBackup Administrator's Guide, Volume I.
For a NetBackup cluster, a valid license for NetBackup for SQL Server must exist on each node where NetBackup server resides.