Just watched on Click about the life expectancy of CD's, apparently its about 5 years before the surface starts to deteriorate and data loss occurs regardless of make or quality. I wonder if the same applies to DVD, and will that valued film collection slowly disappear :dunno:
I found this article http://www.clir.org/pubs/reports/pub121/sec4.html which is more optimistic I think the discs which may fail early are of the cd -r and dvd -r variety with the rw and ram having the shortest life span especially if rewritten many times.
I've got some 25 year old CDs which still sound fine.
I've seen 300 years quoted for the blu ray disc, the pdf below quotes 500 years for the materials used in their study. Typical BBC drama
http://www.optical.com/optical_storage/IEEE_Bluray.pdf
Horrible thought - put it on Bluray and it lasts 10 generations. :eek4:
I've had a few CDs that have turned a browny colour, like the first one I ever bought, Dire Straits Love Over Gold, but it still plays OK.
They get oxidised over time, they're ok whilst the error correction copes
I have some that are about 10 years old and still play ok.
The Love over Gold CD came out in 1983,time flies :eek4:
Doesn't it. :(
Indeed! I had a Fisher CD player, which cost over £400 at the time. I could only afford to buy one CD for a while after that, so I got to know Love Over Gold very well!
(http://www.fisher-price.com/img/product_shots/N8904_b_1.jpg) Didn't realise they were that expensive :whistle:
Meridian were worse. ;D
There was a problem with a handful of CD mastering plants in the late 1980s. It mainly affected those "Made by PDO". At one point there was a scheme run by the manufacturer to replace any bad ones, but that closed a few years ago.
Thanks for that. :thumb:
Aaaah DVD rot !
Quote from: Rik on May 31, 2010, 15:41:05
Meridian were worse. ;D
A bargain though compared to these (http://www.tmhaudio.com/Metronome%20Kalista.htm) ;D
Nice kit but nice price too, think I'd need a mortgage for one of those.
Plus another for the extra large house. :)