On Wed, 13 Feb 2002, Zane H. Healy wrote:
I have no idea
what various DAT formats there are so I'll have to research
that. Ditto for the WORM drives (I have one more somewhere in my
collection).
Could you report your findings on the DAT formats? I'm really interested in
that!
Here's what I've come up with.
There are currently 5 DAT formats (DDS, DDS-1, DDS-2, DDS-3, and DDS-4)
and all are backward compatible.
According to this site:
http://www.ls.eso.org/lasilla/Telescopes/2p2T/E2p2M/WFI/tapes/TapeType.html
DDS-2 and DDS-3 use physically different media. I don't know how this
figures if the standards are all supposed to be backward compatible.
Here's a great page on backup tape in general:
http://www.pctechguide.com/15tape.htm
Here's a troubling statement I found on this webpage:
"One of the drawbacks with QIC is incompatibility. The format has suffered
from an overabundance of standards over the years -
there are more than
120 currently - and not all QIC drives are compatible with all
standards."
Oy. Looks like I'll have to hang on to every single different tape drive
I find to make sure I can recover any QIC formats that get thrown at me.
At least until I find a definitive reference that tells me what drives can
read what formats.
Sellam Ismail Vintage Computer Festival
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