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From: kirchner@informatik.uni-kl.de (Reinhard Kirchner)
Newsgroups: comp.periphs.scsi
Subject: Re: Wren-V Parity jumper
Message-ID: <6399@uklirb.informatik.uni-kl.de>
Date: 14 Aug 90 15:27:38 GMT
References: <RDH.90Aug12150533@borodin.sli.com>
Sender: news@uklirb.informatik.uni-kl.de
Distribution: comp
Lines: 16

From article <RDH.90Aug12150533@borodin.sli.com>, by rdh@sli.com (Robert D. Houk):
> As I was replacing one of our Wren-V disks yesterday, going through the
> jumpers, I was reminded of a puzzle: What is the purpose of the Parity
> Jumper? All of the disks come with the jumper removed, and the manual is
> delightfully terse on what it actually does. I assume installing the
> jumper enables parity checking? On disk Data? SCSI Data? Time of Day?

When I installed my WREN-Vs in the fileserver I also got to this point.
So I phoned the distributor and they told me, the parity on the cable
is enabled. So it may be of use if there is a host adapter which generates
and checks parity on the cable, but I think most do not. They don't
have jumpers for this !

R. kirchner

Univ. of Kaiserslautern, Germany