Archived posting to the Leica Users Group, 1998/09/09

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Subject: [Leica] Archival storage
From: Bill Bain <>
Date: Wed, 9 Sep 1998 09:32:11 -0400

Joe wrote:

>You may be right in thinking of digitizing images as a good way of
>them. However, beware of floppies. Data stored on floppies (3.5 or
5.25) has
>a half life of 10 years or less. An optical disk may be truly archival.
>Joe Stephenson

Joe -

Althoough widely used as such, optical is most decidedly not archival.
I beleive that ISO estimates that the shelf live of the media may be
10-20 years, but the biggest problem is not deterioration of the media,
but rather that the data on the media may be in an obsolete format that
the then-current machines cannot read.  This has happened once with
optical disk drives already, fand or other electronic media as well: how
many places can read information that is stored on an 8" floppy disk

Archival prints are probably still the only true long-term storage.

Bill Bain