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From what I recall, Writable optical disks have a much shorter life span compared to tape (~15 years vs 75 years) Plus, if I was designing an archival system,
by KaiserPro 10y ago
From what I recall, Writable optical disks have a much shorter life span compared to tape (~15 years vs 75 years)
Plus, if I was designing an archival system, it wouldn't be on blueray, unless there was a requirement for magnetic resistance.
- pmorici 10y agoThey make dvds and brds that are supposed to last 1000 years https://en.m.wikipedia.org/wiki/M-DISC https://en.m.wikipedia.org/wiki/M-DISC
- pmlnr 10y agoYou are mistaken here. Tapes, unless stored with extreme precision, usually last ~20 years safely. They tend to have a longer life, but not without a high risk of deterioration. In my experience, written CD and DVD only lasts for <10 years, if you're lucky. However studies show you can get 30-45, even 45+ years out of them. Most Blu-Ray expectancy exceeds this due to the different non organic dye based layering and coating. The one mentioned above, M-Disc was something developed for DARPA and supposed to last 1000 years in theory. See: http://www.mdisc.com/ http://www.mdisc.com/ http://loc.gov/preservation/resources/rt/NIST_LC_OpticalDiscLongevity.pdf http://loc.gov/preservation/resources/rt/NIST_LC_OpticalDisc... http://www.zdnet.com/article/torture-testing-the-1000-year-dvd/ http://www.zdnet.com/article/torture-testing-the-1000-year-d...