Backups for the network drives stored on the Netapp are completed in two ways: snapshots and tape.
A snapshot is a read-only copy of the entire file system and all the files. Each one reflects the state of the file system at the time the snapshot was created. You can navigate through each snapshot as if it were active. Your directories and files will appear as they were at the time that the snapshot was taken. Snapshots are taken every hour on the this schedule.
Full backups are completed monthly, incremental backups are done weekly, and differential backups done nightly. All are written to tape and stored according to their retention schedules.
For information on how to use snapshots to restore a file, or to request a file be restored, visit Recover a file (how to recover a lost or corrupt file).