Backups are done, at minimum, on a daily basis. Restoration of files is guaranteed after one backup cycle occurs at the end of the day. Tapes are archived for one month. Data is available for restoration for a maximum of 30 days. At this point the tapes are rotated back into the next backup cycle and overwritten. If files are deleted and need to be restored, a request should be submitted to the Help Desk to perform a restore operation.