I recently came across this post on how long data will last here at Seagate’s blog:
“In the past, I posted about the shelf-life of each storage medium, granted it’s not forever, but 100 years is pretty good. A lot better than disk drives and tape.
Floppy disks: up to 5 years
Hard Drives: up to 10 years
Magnetic tape: up to 20 years
Optical disks: up to 100 yrs
SSD and Flash: up to 100 yrs
Stone tablets: up to 10,000 yrs”
I found it particularly interesting because he references a redOrbit article on optical data storage technology pioneered in Prof. Ken Singer’s lab in CLiPS.