Right now, probably typical computer SSD disks. Anything lasting more than that usually steps in office/corporate solutions, like magnetic tape backups
Googling around, I found out there are some “archival grade gold” DVDs, and a M-DISC (available as DVD or BluRay) that claims to last “centuries”. Haven’t seem anything on scratch or dust resistance about either
bloodfart@lemmy.ml 2 months ago
Magnetic disks. The person who said ssds hasn’t tried it. Spinning magnetic disks lose their data much more slowly than any ssd cell.
Even 3.5” floppies do better than ssds.