Configuring multiple copy synthetic backups
To configure a multiple copy synthetic backup, create a configuration file on the primary server for each synthetic backup policy for which a second copy is to be produced.
The configuration file is a text file that is named after the policy and schedule:
multi_synth.policy.schedule
Create the file in the following location:
On Windows:
install_path\NetBackup\db\config\multi_synth.policy.schedule
On UNIX:
/usr/openv/netbackup/db/config/multi_synth.policy.schedule