Today I happened across a couple of packages to test drive in the near future for photo backup, though neither are specifically tailored for said purpose:
- backupninja - lightweight, extensible meta-backup system Backupninja lets you drop simple config files in /etc/backup.d to coordinate system backups. Backupninja is a master of many arts, including incremental remote filesystem backup, MySQL backup, and ldap backup. By creating simple drop-in handler scripts, backupninja can learn new skills. Backupninja is a silent flower blossom death strike to lost data.
- cedar-backup2 - Cedar Backup is a software package designed to manage system backups for a pool of local and remote machines. Cedar Backup understands how to back up filesystem data as well as MySQL and PostgreSQL databases and Subversion repositories. It can also be easily extended to support other kinds of data sources.