Consider the following factors when deciding to create additional policies:

• Best times for backups to occur.

  To back up different clients on different schedules may require additional policies with different time schedules. For example, create different policies for night-shift and day-shift clients.

• How frequently the files change.

  If some files change more frequently than others, the difference may be enough to warrant creating another policy with a different backup frequency.

• How long backups need to be retained.

  Each schedule includes a retention setting that determines how long NetBackup keeps the files that are backed up by the schedule. Because the schedule backs up all the files in the backup selection list, all files should have similar retention requirements. Do not include the files whose full backups must be retained forever, together in a policy where full backups are retained for only four weeks.