Thanks much, Richard.
Lots of new and relevant information in the document to digest and
follow-up on-- especially the affordable optical disc testing
options which might help signal when its time to duplicate one's
discs. I'm thinking there might be services where one can send in
some sample discs every year to get tested on the top-notch testers.
So, today, the British Library Sound Archive would prefer to receive
new collections of sound recordings on numerous mirrored drives? Rob
D.
=3D =3D =3D =3D
At 9:39 AM +0100 6/27/10, Richard Ranft wrote:
>I recommend you refer to the free online version of
><http://www.iasa-web.org/tc04/audio-preservation>http://www.iasa-web.org/t=
c04/audio-preservation
>"IASA-TC04, 2nd Edition:
>Guidelines on the Production and Preservation of Digital Audio Objects,
>March 2009" which (chapter 6.1.2 and chapter 8) advises against optical
>discs for long-term storage. Instead (chapter 6.3) it advocates keeping
>multiple copies of each digital file spread across hard disc drives (HDD)
>with regular file integrity checks. HDD are cheap and individually
>unreliable yet a system of mirrored drives is very reliable if managed
>properly. This solution is widely adopted in professional archives includi=
ng
>the one where I work, the British Library sound archive.
>Richard Ranft, London
>
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