A raid6 array across a collection of separate disks might do it.
Swedneck@discuss.tchncs.de 2 days ago
i think your best bet would just be to brute force it: get a bunch of different media (usb-drives, CDs, hard drives, whatever you can get your hands on and ideally from different brands) and just put the same data on all of them, then wrap in a series of plastic bags that you try to put a vacuum on, put in the most durable water and ideally airtight container you can get your hands on, then again wrap that in some plastic bags because why not.
Then bury all that as deep as you can and surround it in rocks, especially i think you’ll want a bunch of rocks on top of it. And for extra points repeat all this as many times as possible in different locations.
All this is just to compound the chances that at least one of the copies of the data will survive, and even if that fails you’ll hopefully end up with enough data being intact across the different storage mediums that you can piece the data together somehow, i’m not sure how precisely you’d do that but it’s at least possible to figure out so long as the data is there.
rbos@lemmy.ca 2 days ago
Typotyper@sh.itjust.works 2 days ago
There definitely is an advantage to different media types. Each technology has their own limitations. Tape back up, SSD, USB drive, DVD and HD with spinning platers
Blackmist@feddit.uk 2 days ago
SSD would be 100% dead unless you buried it with a power source.
NostraDavid@programming.dev 2 days ago
Huh? Why? Should SSDs not be able to contain data without power?
rikudou@lemmings.world 2 days ago
That’s one of the downsides of SSDs, you lose data really fast without power. Like, after a year, your data will almost sure not be intact.
Cornelius_Wangenheim@lemmy.world 2 days ago
Flash memory stores data as a voltage level, with different values being a tiny distance apart. The voltage slowly leaks out of the cells and has to be periodically topped off.
Blackmist@feddit.uk 2 days ago
No, they’ll start to corrupt within a year or two. They need to be powered to retain data.
After 30 years you can forget it.
Treczoks@lemmy.world 2 days ago
Sadly, no.
some_guy@lemmy.sdf.org 2 days ago
There was a recent paper on this. The failure rate was higher than expected. You’ll have to search for it; I didn’t save a link.