I have an old DDS3 tape drive and I use AMANDA (http://amanda.org http://amanda.org) to back up some important stuff (databases, home dirs, config files). Since

I have an old DDS3 tape drive and I use AMANDA (http://amanda.org http://amanda.org) to back up some important stuff (databases, home dirs, config files). Since it's old technology, I've never had a problem finding a replacement tape drive or new tapes. I also mirror a few of the most important things such as photos and git repos between different computers, just so I have stuff taken care of in case of flood/fire/tape failure.