Linus made this video back in August 2013 about the IOSafe N2 NAS enclosure. This is one way of protecting data, though I think offsite is probably the best way to avoid getting it burned up!
I'm paranoid so I keep my external hard drive backup in a fireproof mini-safe. (I don't keep my backup drive connected since it would seem to me that if ransomware infected my computer it would clobber the backup drive as well if it were constantly connected. Of course that means backups aren't done very often.)
I've got an older system by today's standards that still runs the game well by my standards.
I backup essential data like photos to cloud storage (automatically).