[photo-3d] CD-Rs = 200 years?

[Tom Deering <photo-3d@xxxxxxxxxxx>]

On 6/17/00, Andy Beals wrote:

>> I'm concerned that there isn't a digital storage medium
>> currently available that will safely retain images for the
>> long term.  I believe CDRs are supposed to be good for about
>> 12 years if stored in ideal conditions.
>
>I think you're off by a factor of ten, there.



How long is the life span of a CD-R?

The life span of a recordable disc depends on several things:

1.   Color of disc: most makers of CD-recordable discs claim that the 
green (cyanine) discs last up to 75 years, gold (phthalocyanine) last 
up to 100 years and the silver-blue platinum last up to 200 years. 
See the manufacturer's information.

2.   Environmental factors: the lifetime of the disc may be reduced 
if is exposed to water, sun, or heat. Treating your recording media 
carefully will extend its life expectancy.


Above from http://burningcd.com/faqs.html#span

Tom
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