I remember looking around through all of the backup software a while back and found that one called star was the best for me. (thats pronounced ess-tar) and it to this day is working wonderful! We SMB mounted all of the things to be backed up (we were backing up NT servers to Tape). Once a night it did its backups.
There was one better backup program that looked really nice but our server didnt have X on it (IMHO no server should) and we couldn't use that one.
Please excuse the rambling nature of this message! I've been studying for finals for over 9 hours today!! One can only look at assembly code for so long!!! gets bad when you start typing mov instead of mv to move files!!