If I go and buy some new blank CD-R/CD-RW/DVD±R/DVD±RW now, which will last the longest?
Yo can get an idea if you visit the Media Forum:
The following summary is the latest from the American Records Management Association (ARMA International).
1.) Life Expectancy (Unacceptable Error Rate):
a.) Flexible Disks = 1-3 years. b.) Ferric Oxide recording materials = 5-7 years. c.) Chromium Oxide recording materials = 10+ years. d.) Evaportade metal recording materials = 10+ years.
2.) Life Expectancy (Unacceptable Error Rate):
a.) CD-R, DVD-R, DVD+R = 5-10 years before recording; 100-220 years after recording. b.) CD-RW, DVD-RW, DVD+RW = 25+ years. c.) DVD-RAM = 25+ years.
If the recording media is taken care of well, the recording technology will be obsolete long before the media is not readable.
They won’t give you brands, but types of dye: http://www.clir.org/
Thanks for the authoritative answer. I am saving your link, it will resolve a lot of pointless arguments.
Actually it’s not an authoritative answer at all. The variables involved are far too many to give authoritative answers. They are, at best, guesses. Even the format you choose to record is another variable. That’s without getting into the vast differences in disc manufacture and materials.
Points 1a, 1b, 1c and 1d sound like they are exclusively talking about magnetic tapes media rather than discs. With the possible exception of 1d, which can be used on discs too, but they’re all just ultra-simplistic generalisations. Real results can and do vary wildly. There is no authoritative answer.
Now that’s a cynical view, cynicalbastard…
I don’t think so. Just closer to the truth.