The amount of information logged and how long it is retained is controlled by the following NetBackup configuration parameters:
The length of time NetBackup retains debug logs. This setting affects all debug log files generated by NetBackup, not only the Vault debug logs.
Vault logging level. Symantec recommends that you use a debug level of 5 when you generate logs that you send to Symantec for troubleshooting purposes. You can set the debug level to 5 for all Vault sessions or you can use the -verbose option on the vltrun command in the Vault policy that initiates the Vault job.
To set the duration and level for log files
In the NetBackup Administration Console, expand NetBackup Management.
In the right pane, select the master server and then click Actions > Properties.
Enter the length of time to retain the NetBackup log files. This setting applies to all NetBackup logs, including but not limited to, the Vault logs.
In the NetBackup Administration Console for UNIX, the field name is Keep Logs For.
In the NetBackup Administration Console for Windows, the field name is Duration to Retain Logs.
Select the Vault Logging Level.
The logging level corresponds to the bp.conf entry VAULT_VERBOSE = level on UNIX systems. If this value is not specified in the bp.conf entry, then the default verbose level is set to 5.