The Keep logs property specifies the length of time, in days, that the master server keeps its error catalog, job catalog, and debug log information. NetBackup derives the Backup Status, Problems, All Log Entries, and Media Log reports from the error catalog. Also limits the time period that these reports can cover. When this time expires, NetBackup also deletes these logs (that exist) on UNIX media servers and UNIX clients.
Specify how many days you want to keep the logs in case you need the logs to evaluate failures. For example, if you check the backups every day, you can delete the logs sooner than if you check the backups once a month. However, the logs can consume a large amount of disk space, so do not keep the logs any longer than necessary. The default is 28 days.