Subject: Re: TK50 - how much can i get onto one tape?
To: Allison J Parent <allisonp@world.std.com>
From: Tom Ivar Helbekkmo <tih@nhh.no>
List: port-vax
Date: 10/26/1998 19:46:57
allisonp@world.std.com (Allison J Parent) writes:

> Officially 95mb.  depending on how you structure your data and all it 
> could be as low as 60mb usable. I used to use it to completley image 
> backup RD53s (71mb) with room to spare.  20mb is way out of line.

I've been doing 'dump -b 32 -B 90000' here lately.  That is, 32KB
records and 90000KB expected to fit on the tape.  This was after a
'dd bs=32k' that errored out after 92000KB.  On the other, hand, a
test with 'dd bs=256kb' the other day bombed out after 88832KB; I
don't know what to think of this.  Aren't all TK50s the same?

Anyway, as Allison says, it depends on your record size.  Do a test
run over a couple of tapes (if you want to use tar, use 'dd bs=10k')
and see what happens.

-tih
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