While it's a bit dated, this book, Backup & Recovery: Inexpensive Backup Solutions for Open Systems (http://www.amazon.com/Backup-Recovery-Inexpensive-Solutions

While it's a bit dated, this book, Backup & Recovery: Inexpensive Backup Solutions for Open Systems (http://www.amazon.com/Backup-Recovery-Inexpensive-Solutions-Systems/dp/0596102461/ http://www.amazon.com/Backup-Recovery-Inexpensive-Solutions-...) is highly recommended. And higher level programs like BackupPC and Bacula are still excellent solutions. It's comprehensive, covers off-line bare metal backups (which aren't exactly changing any time soon), points you at tools like rdiff-backup which you can use to get reasonably close to continuous data protection (I do it every hour), etc. etc. Along with a few good and short war stories. And preps you for the big times, if you're interested.