Love backuppc, especially 4.X where they replace the somewhat ugly hack of using hardlinks with checksums. Recommended if you have a collection of systems, if

Love backuppc, especially 4.X where they replace the somewhat ugly hack of using hardlinks with checksums. Recommended if you have a collection of systems, if it's just a single system I'd use rdiff-backup (if you have remote storage) or duplicity if you want to pay for remote storage (amazon, rackspace, or similar).