LTO tape exists and should last 30 to 50 years in good storage conditions.
I have a normal PC...
I'd love some kind of external tape drive that I can connect with USB-C, or USB-3...
But everything is SAS? And no way to convert SAS to SATA?
Recommendations?
Assuming you need to “get up and go”, like a refugee situation, what are the chances that you’ll find a drive that can read Blu-ray disks, versus the chances that you’ll find a LTO tape drive ?
For individuals? No.
LTO is enterprise gear that is not suitable for people. If you want to waste alot of time with backups, curate your stuff and get it on optical media. Better yet, print the good stuff on archival papers and ink and stow them securely.