[8525] in linux-scsi channel archive
Re: Fast Wide vs Ultra Wide
daemon@ATHENA.MIT.EDU (Ricky Beam)
Tue Apr 4 01:01:16 2000
Date: Tue, 4 Apr 2000 00:46:37 -0400 (EDT)
From: Ricky Beam <jfbeam@bluetopia.net>
To: Mikael Abrahamsson <swmike@swm.pp.se>
Cc: The Linux SCSI list <linux-scsi@vger.rutgers.edu>
In-Reply-To: <Pine.LNX.4.10.10004032315080.28140-100000@uplift.swm.pp.se>
Message-ID: <Pine.LNX.4.04.10004040039330.23096-100000@beaker>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
On Mon, 3 Apr 2000, Mikael Abrahamsson wrote:
>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.
Termination or cabling or controller or drives ...
Anyway, no LVD drive has any termination logic. If there were any, it
would have to be "multi-mode" termination hardware. Multi-mode terminators
are _not_ cheap nor are they tiny. (several dollars of components eating
several square centimeters of precious PCB space. pennies add up quickly
and they'd have to test the terminator.)
Feel free to point out any LVD drives that do have terminators. I'd have
to look, but I don't think you're supposed to put terminators on LVD
hardware as per the SCSI-3 spec (altho' it's still a draft?)
--Ricky
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