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Also, avoid those slim-line cases if they were designed for CDs.  CD
cases have a tighter hub-grip than DVD cases because of the risk the two
polycarbonate layers of a DVD pull apart!

Nigel
Archive of Maori & Pacific Music

-----Original Message-----
From: Association for Recorded Sound Discussion List
[mailto:[log in to unmask]] On Behalf Of Jerome Hartke
Sent: Monday, 8 August 2005 12:20 p.m.
To: [log in to unmask]
Subject: Re: [ARSCLIST] "Archival" DVD-R?

> Multiple copies are an excellent choice, indeed, I would say a 
> necessary one.
>
> They should be on different media, both (or all) of high quality.
>
> I trust that by "seal", you do not mean hermetically seal the disc.
> Keeping air out means trapping gasses in, which I believe is 
> considered unwise for recordable optical media. Of course, you are 
> correct that a master copy should not be accessed except to verify
integrity.
>

As usual, Mike is quite correct. I might add incorrect volume and file
structure logical errors as a third, common source of premature failure.
Such discs "work" in some operating systems, but fail is others or later
versions of a "good" O/S.

Jerry
Media Sciences, Inc.