From: Greg Schmitz (gws1@columbia.edu)
Date: 10/19/03-10:37:17 PM Z
On Sun, 19 Oct 2003, Dennis Moser wrote:
== much deleted: snip%<
>
> It isn't an encouraging situation. The best approach would be to burn two
> copies, store one in the a freezer (yup! just like you'd do for those
> precious Ektachromes!) and use the other one as your "working" copy. In
> about 8 years, you should bring the other one out of cold-storage, make a
> copy and return it to cold-storage.
I'm not sure how much a cold storage environment will help. The
problem, as noted, is in large measure the result of the mirroring
surface degrading. This happens because the plastic that the
mirroring surface is enclosed in is gas permeable and thus allows the
mirroring substrate (most often aluminum) to react with and be
degraded by atmospheric pollutants. A better approach might be to
store the archived CD in an evacuated container or a nitrogen
atmosphere; Kodak sells/used to sell a heat seal-able pouch
specifically for the cold storage of photographic materials.
In the meantime here's a link to Cool's Electronic medium page, perhaps
you can find some useful information there:
<http://palimpsest.stanford.edu/bytopic/electronic-records/electronic-storage-media/#optical>
Best -greg schmitz <gws1@columbia.edu>
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