Music industry’s 1990s hard drives, like all HDDs, are dying
https://lemmy.sdf.org/post/22250423

Music industry’s 1990s hard drives, like all HDDs, are dying - SDF Chatter
My father told me he wanted to make USB flash drives of all the scanned and
digitized family photos and other assorted letters and mementos. He planned to
distribute them to all family members hoping that at least one set would
survive. When I explained that they ought to be recipes to new media every N
number of years or risk deteriorating or becoming unreadable (like a floppy disk
when you have no floppy drive), he was genuinely shocked. He lost interest in
the project that he’d thought was so bullet proof.
Im really hoping, waiting, for a good dense long-term storage medium. It doesn’t have to be fast, but large, cheap, and durable. I want a way to backup my plex library, or even, daily backups of documents and project files, and I don’t want to think about them ever again.
M-Disk is rated to last like 100 years. They are also working on a 125 Terabyte CD. Optical storage is the way to go.
Was it sapphire or something? But one and done. I wonder if you could just keep writing and just “cross-out” the old stuff with that kind of capacity.
Not sure what sapphire means, but here is the article. Just appending records and differential backups would seem to be the way to go.
the new optical disks are claimed to be “highly stable so there are no special storage requirements.” The researchers tout an expected shelf life of 50 to 100 years

Chinese researchers tout optical disk format with up to 125TB capacity
New disks are Blu-ray-size but offer up to 10,000x greater capacity.
Tom's Hardware