JKLDEV is JKL's development system and does not require continuous availability. It is used primarily during the week and during the day, although there is some development activity into the evening hours and on weekends.
This system can be taken down for a full backup on a weekend night and have changes backed up on all of the other nights.
To accommodate these requirements, Sharon uses the *System policy that was shipped with BRMS. She schedules this policy to run every Saturday night at midnight. Sharon tested this backup and found that the amount of data being backed up would fit on a single tape so the backup could be run unattended. She just has to verify that the tape device is available and there is an expired tape mounted before leaving for the weekend.
During the week, Sharon also schedules the policy to start running at midnight every night. She chooses to override the policy setting and do a cumulative changes-only backup, which means that she saves all of the data that has changed since the last full backup.