The kind you can use to restore whole system with, in case of catastrofic failure. Some background - until last year I was using EMC Retrospect Pro. It was not bad and I liked its flexibility, but had ...
Note, however, that DVD-R back-up is only a supplement to a mirror drive or RAID array, not a substitute. DVD backup is takes too much time to be a realistic day-to-day solution. That said, you can ...