In your comments you mentioned your host is gonna be truenas or unraid, and about 3TB of data to backup. I would recommend backing up to external/hotswap hard drives, which is what Ive been doing on btrfs and my soon to be main truenas scale. Around 10 years ago I scored a dell lto3 tape auto loader from work. It was interesting backing up to tape but after 5 or so years of using it i got rid of it. Biggest painpoint was the backup software. I settled on bareos which was fine but clunky to setup right. I had to write scripts to automate ejecting tapes from the autoloader and restoring files from backup was annoying, especially when backups spanned multiple tapes. Maybe with lto7 these days things are better with that new lto file system and less tapes for your 3tb of data, but youll still probably end up using bareos. If youve got the time and money id say go for it, it was a fun learning experience and initial novelty. Im not sure id go back to tapes personally though.