On Fri, 14 Feb 2003, David wrote:

> I'm currently using CD's for backup. Has anyone any experience using DVD
> for the same purpose? Is there any way to get around tar'ing so that
> permissions are properly preserved on CD/DVD? Is there any reason that DVD
> is a bad idea?

Simple. Lack of standards for data DVD's

There's DVD-R, DVD-RW, DVD-ROM, DVD+R, DVD+RW, DVD-RAM and probably
another one I can't remember.

There's one drive by Sony which does multiple - but not all - variants

SONY DVD±R/RW/CD-R/RW DRU-500A

Write
 DVD-R     4x
 DVD-RW    2x
 DVD+R   2.4x
 DVD+RW  2.4x
 CD-R     24x

Read
 DVD       8x
 CD       32x

Buffer 8192kb (Burn-Proof)

That does what *appear* to be the 4 main DVD "standards", but who knows if
they're going to win out?

DaZZa


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