[8517] in linux-scsi channel archive
Re: Fast Wide vs Ultra Wide
daemon@ATHENA.MIT.EDU (Mikael Abrahamsson)
Mon Apr 3 17:43:11 2000
Date: Mon, 3 Apr 2000 23:17:34 +0200 (MEST)
From: Mikael Abrahamsson <swmike@swm.pp.se>
To: The Linux SCSI list <linux-scsi@vger.rutgers.edu>
In-Reply-To: <Pine.LNX.4.10.10004031116040.10344-100000@ziggy.one-eyed-alien.net>
Message-ID: <Pine.LNX.4.10.10004032315080.28140-100000@uplift.swm.pp.se>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
On Mon, 3 Apr 2000, Matthew Dharm wrote:
> Can an Ultra Wide SCSI-II drive operated when attached to a Fast Wide
> SCSI-II controller? I have this setup (all components purchased 2nd
> hand), and it's not working. I'm trying to figure out what part of all
> this (controller, cable, drive) is bad.
Yes. All scsi devices start negotiating at 4mhz narrow async and then
start to go up. I usually disable ultra scsi in my controllers because of
stability issues (cable can only be 1.7 meters or something).
As someone said before, your problem is probably termination. Newer drives
(LVD) doesnt all have termination which means you have to fix this with
some kind of special cable or a terminator.
--
Mikael Abrahamsson email: swmike@swm.pp.se
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