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Long storage life curiosity
(lemm.ee)
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Well let's look at some actually verifiable data. I have optical discs of all generations (CD-R, DVD-R, BD-R) going back 20+ years that are still fine. They don't spontaneously decompose or anything. As long as they're properly stored I see no reason for them to stop working for another 20 years.
Do you periodically verify them?
I do sample them every few years out of curiosity. They mostly contain very old software and game kits from the late 90s and early 2000s so the data is only interesting for historical reasons. I also check them visually for disc rot but so far there hasn't been any. Which makes sense because they're not scratched, and they're stored inside CD wallets put inside boxes put inside a dry cupboard at room temperature so environmental contamination is not likely.
Weird my post is gone.
I have azzo verbatims that were tested after burn for pi /po /pie errors that went bad after 15 years despite being stored in black cases in a temp controlled room. It's not like the entire disc is gone but there are a few unrecoverable errors.