The Backup Exec SQL database BEDB holds all the jobs, history, and most of the settings.
Backup Exec backs this up internally every day to \Backup Exec\Data\bedb.bak.
The other important part is the \Catalogs folder. This is all your restore selections to restore data without re-catalog in case of a disaster.
Some customer copy the bedb.bak and catalogs to a alternate location using a batch file or Windows Task schedular. There are different ways to protect the \Data and \Catalogs folders.
The Catalogs folder can be large in size.
SDR can also protect the media server.
Performing manual disaster recovery for Backup Exec 2014, 15 and 16
https://www.veritas.com/support/en_US/article.000020082.
How to do a manual Backup and Restore of Backup Exec (BEDB) database
https://www.veritas.com/support/en_US/article.000041083
How to recover the Backup Exec Database from the BEDB backup file
https://www.veritas.com/support/en_US/article.100019508.html
You may also want to look at Backup Exec command line Powershell Export-BEBackupDefinition Cmdlet