As libraries scale their digitisation efforts, some are looking for a single file to act as archival master and access version, and using JPEG 2000 as the format. This is probably less relevant for smaller repositories right now, but if they can establish successful methodologies, there is no reason why others shouldn't go this route.
The case is neatly put by Christy Henshaw at the Wellcome Library here: http://bit.ly/98zfXV
On the other issue, if by gold discs you mean the gold CDRs, then these are not recommended for archival storage. There are some quotes from The National Archives here: http://bit.ly/Ljo0t
Hope that helps.
Michael
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Michael Stocking
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On 22 Mar 2011, at 13:13, Tehmina Goskar wrote:
> What is your opinion/received wisdom on the following?
>
> When digitising collections do you ensure that two masters are created, one
> to be untouched for separate archival storage (to be checked/migrated as
> required) but primarily for preservation rather than access; and another
> working master, for example accessed on a network drive? The working master
> is used for creating further surrogates for online use, file transfers, etc.
>
> Or do you work off one master copy, e.g. an uncompressed TIFF of a
> photograph, and create all your surrogates from this and not bother with the
> separate storage of a master?
>
> Second question: Digital preservation media, do people still use gold discs
> as a standard or solid state hard drives, tape or similar?
>
> I ask having had a trawl through some of the Collections Link documents but
> unable to find anything specific that is based on practice (which does not
> mean it isn't there, I just haven't had more time to go through all the
> documents).
>
> The nearest I have come to best practice type advice was old Re:source's
> Collections Care Benchmark document but that still talks about microfilm
> masters (2002).
>
> Thanks,
> Tehmina
>
> --
> Dr Tehmina Goskar, MA AMA
> [log in to unmask]
>
> http://tehmina.goskar.com/
>
> Research Officer: ESRC Global and Local Worlds of Welsh Copper
> History & Classics
> Prifysgol Abertawe / Swansea University
>
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