Backups are extremely useful insurance in case of hardware failure, major filesystem problems, system intrusion, or even user error. When these problems crop up, a backup can speed recovery of a working system. Unfortunately, backing up an entire network can be a tedious proposition. Fortunately, tools such as Samba and AMANDA can help simplify this process. Although they can take some time to set up, once they're configured, their day-to-day use is relatively straightforward, and they can pay off quite handsomely when problems occur that require data recovery from the backup.