18 Oct
2002
18 Oct
'02
7:48 a.m.
At 09:19 AM 10/18/2002 +0100, Stan Barr wrote:
You might also like to search for ISO 18921 which is
available on the
net as ISO_18921.pdf (can't remember exactly where...) which discusses
the life expectancy of CDs in respect of photography - which is why I
located a copy.
http://www.pima.net/standards/iso/tc42/wg05/ISO_18921/ISO_18921.pdf
Also the book "Avoiding Technological Quicksnad:
Finding a Viable
Technical Foundation for Digital Preservation" by Jeff Rothenberg
is available online as html.
http://www.clir.org/pubs/reports/rothenberg/contents.html
In short, report says "emulation is an answer". Another relevant
point in the discussion jumped out at me: all the estimates of
theoretical media longevity (be it CD, CD-R or whatever) have
nothing to do with the longevity of media *in use*, and that
any media in use may tend to fail after only a few years,
and this greatly increases the need for media recopying practices,
and for schemes of metadata to record info about the info,
from digitizing the label on up.
- John