Re: [nottingham] sun 370-2176 tape drive

From: Lee (nospamlee@astarix.co.uk)
Date: Tue 14 May 2002 - 23:07:24 BST


I can confirm the HP 1533A works fine with suse 7.3 , insmod st
picks it up first time, performance is really good , I'm sure it's
quicker than in NT (probably), but I've not had time to benchmark it.

There always one thing I don't understand about dat drives, they have a
jumper (well HP ones do) that make them unix or pc compatible? Anyone
know what that does, is it some low level scsi protocol thing, , in fact
I've looked(google) can't find what if acutally does?

On a slightly different note, it's annoying to see fast scsi drives,
placed on the same bus as a slow tape drive, thus slowing the whole
chain down :-( (you see it mainly in pc 'servers' designed by bodge it
and scarper merchants, I will mention no names...)

So, how the hell do you a benchmark a dat drive? I thought off

time dd if=/dev/random of=/dev/st0 count=10000
time dd of=/dev/st0 of=/dev/null ???

or something???

is there a tool to do this?

I wonder if I can record tv directly from my dc10 capture card to my dat
drive with????

lavrec -fa -in -d1 -l -1 -q30 -w | dd of=/dev/st0

????? heheeheheheeheh :-). probably not, because of speed/buffering
problems??..good job big drives are cheap...:-)

Laters,
Lee

On Tue, 2002-05-14 at 18:19, Matthew Sackman wrote:
> On Tue, May 14, 2002 at 12:26:40PM +0100, Robert Davies wrote:
> >
> > I attached a Sun DDS-2 drive, they were known as the 'Archive Python', where
> > Archive were name of manufacturer. I don't know about those numbers
> > 370-2176, not the kind of thing I keep on top of head.
> >
> > If it's same drive (standard Sun DDS drive 5GB compressed), then I have tried
> > using one with Linux 2.2. I could get system to talk to it, but even using
> > the 126 512 byte blocking factor I could not obtain reasonable performance,
> > and gave up on directly attaching the device, choosing to backup over net
> > instead.
>
> It's not that one, but I know the one you mean. The one you're thinking
> about was really a 4mm DAT drive with no standards link at all (kinda
> hence the 5GB). This drive is a 4/8GB DDS2 4mm. How much it has in
> common with any standards is the problem.
>
> I think I'll get an HP 1533A: at least I'm certain that they will
> work. And I can get it rather cheaper too...
>
> Many thanks for the background info.
>
> Matthew
>
> --
>
> Matthew Sackman
> Nottingham
> England
>
> BOFH Excuse Board:
> /pub/lunch
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