About the NetBackup database installation
Generally, the implementation of the NetBackup database in the NetBackup catalog is transparent. The NetBackup primary server includes a private, non-shared database server for the NetBackup database (NBDB).
The same installation of the NetBackup database is used for the optionally-licensed product, Bare Metal Restore (BMR) and its associated database (BMRDB). The BMR database is created during the BMR installation process.
By default, the NetBackup database (NBDB) is installed on the primary server. The primary server is also the default location for the Enterprise Media Manager (EMM). Since EMM is the primary user of NBDB, the NetBackup database always resides on the same computer as the Enterprise Media Manager.