On 25 Mar 2011, at 12:29, SR Gray wrote:
> - Loss of disc integrity. Under adverse storage, possible defects are layer separation, lack of planarity, cracking, and pinholes. Large and rapid temperature and RH fluctuations can be particularly detrimental.
> - Corrosion. May occur due to high RH.
> - Mold [DVD rot]
> - Poor air quality. Pollutants can cause corrosion of the metallic reflective surface..
> - Light exposure
>
> On DVDs:
> "DVDs are even more complex, consisting of two CDs bonded with an adhesive. The
> polycarbonate supports form the outside layers of the laminate. Different DVD formats have different layer structures."
>
> None of this takes into account the risk of actually using CD/DVDs (who would be so foolhardy!) So to summarise. Depending on storage conditions data can indeed "somehow
> vanish"!
eek…
FWIW I have lots of Data on *Cheap* DVD's from 2004 and it's all still there…
They've been stored in a big Case Logic DVD wallet on the shelf in my home office.
I imagine the term "Under adverse storage" applies here.
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