Comment on RIP obsolete tech
Eufalconimorph@discuss.tchncs.de 2 days agoThey don’t last very long. About 5-10 years at most, and that’s if you bought special archival burnable DVDs. If you depend on them for backups, you should check the integrity annually (always include a checksum like SHA256 with any backup archive).
hperrin@lemmy.ca 2 days ago
I have CDs that I burned in the 90s that still work fine. I’m assuming the blu-rays I burn now will probably last as long, which is decades longer than I need them to.
oo1@lemmings.world 2 days ago
I heard that the higher the data density on DVD and BR means the higher the failure rate. Though i have no real evidence of that myself.
Maybe one or two bits corrupted here or there will only cause some unnoticeable artefacts anyway.
Eufalconimorph@discuss.tchncs.de 2 days ago
Music CDs or data? Music CDs have built-in error correction, data CDs don’t. You can certainly extend the lifetime if they’re stored in the dark in a cool, dry place (UV light, heat, and humidity all damage the dye that gets burned to encode them) but they’re not reliable archival storage without error correction.
socsa@piefed.social 1 day ago
Data CDs actually use even more robust error correction since they use interleaving in addition to FEC since they don't need to scan in "real time"
hperrin@lemmy.ca 2 days ago
Music. I have some data CDs I burned in the mid 2000s, that I booted up a few years ago (Linux live CDs). I don’t have any data CDs from the 90s though. IIRC, ISO 9660 does have error correction.