alt Hacker NewsmDisc is an optical format designed, and tested for 100+ years of storage, can be read from a consumer dvd player and cost <$10 a disc.
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Melatonic • today at 3:44 AM
It's still a standard ish format though and not designed from the start for archival
Apparently mini discs use a different burning method (obviously) and are very very stable.
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LTO9 is like 45TB for <$100 (I got a bunch for €55 a piece), so 4.5TB for <$10 is being generous. And even if you didn't think they lasted 30-40 years and made copies every 3 years, it's still cheaper, not to mention you have fewer tapes to manage.
Also: I don't have a bd/dvd player in my house today, so even if there are the most tremendous gains in medical sciences I'm almost certainly not going to have one in 100+ years, so I'm not sure m disc even makes cost-sense for smaller volumes.
Maybe if you want to keep your data outside for sunshine like the author of the article, but that's not me...