this post was submitted on 12 Sep 2024
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Archival grade m-discs, apparently. I had the same question. https://www.howtogeek.com/858426/whats-the-best-way-to-store-data-for-decades-or-centuries/
https://www.amazon.com/s?k=archival+mdisk
It's a shame their capacity lags so far behind current hard drives. And not many drives for these discs are still made, so what are the chances of them becoming unreadable just because no one has equipment to read them?
Cool! I can see how optical media could, in theory, be very long-lasting as long as you don't use materials that oxidize or otherwise degrade over time.