Jim, would you mind sharing your source for the information you provide
below concerning the life expectancy of CD/DVD as a storage
medium? You state that the life expectancy is, at best, 35 years.
I would appreciate your providing the source for that information.
University of South Florida
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"The past is a foreign country; they do things differently there."
On Wed, 31 Jan 2001, Jim Beaven wrote:
> "(3) FORMAT MIGRATION
> The Library shares with the University, the responsibility of
> guaranteeing that ETDs will be available to researchers both inside
> and outside of the academic community. To keep ETDs reader-friendly and to
> retain full access will mean migrating the current file
> formats to new, standard formats not yet known."
> Without having a paper copy Purdue will have to make such a guarantee
> with no way of knowing the cost in dollars and time that it will entail.
> Reflecting on the history of library funding, how can we make such a
> guarantee? Not only will we see new standards as yet unknown
> that will replace .tif, .wav, .mpeg, .jpg, .gif, .pdf and other
> current formats, but we will see breakdown of the current storage
> media analogous to the deterioration of acid-based papers. At
> best, the lifespan of a CD/DVD is 35 years. I, personally, doubt that
> we will be using CD/DVD in ten years. So not only will the T/Ds need be
> migrated to new software, but to new storage media as well.
> Will we then become dependent on a commercial company (possibly a
> monopolistic one with monopolistic pricing schemes) just so we can access
> our own T/Ds? Will we be in some group of libraries needing to pay
> constantly higher costs to migrate each generation of T/D storage?
> "This will be done through the cooperative efforts of the library (who
> maintains the submission software, the database of ETDs, and the secure
> archive) and University computing expertise."
> I would like to address Security and other issues in a different post.
> "Formats recommended for ETDs that may need to be converted to new
> standards in the future:"
> This could be a very high price to pay.
> James Beaven
> Librarian Assistant V
> Special Collections, Archives, and Thesis Deposit
> Purdue University