[8237] in linux-scsi channel archive
Re: domain validation
daemon@ATHENA.MIT.EDU (Doug Ledford)
Fri Feb 25 11:24:14 2000
Message-ID: <38B6A16C.1475D602@redhat.com>
Date: Fri, 25 Feb 2000 10:36:12 -0500
From: Doug Ledford <dledford@redhat.com>
MIME-Version: 1.0
To: Dan Jones <djones@valinux.com>
Cc: Robert Frey <bobfrey@home.com>,
Matthias Andree <ma@dt.e-technik.uni-dortmund.de>,
Ishikawa <ishikawa@yk.rim.or.jp>,
Guest section DW <dwguest@win.tue.nl>, linux-scsi@vger.rutgers.edu
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Dan Jones wrote:
>
> Robert Frey wrote:
> >
> > I agree it's better to have a system running than not running, but I would also
> > argue that domain validation speed fall-back is a symptom of something wrong
> > with the SCSI "domain" that should be fixed.
> >
> Domain validation covers two cases. You are referring to a system
> that does not work as specified. The other case for domain
> validation is to support legacy equipment, which still has
> economic value, but cannot run reliably at the fastest SCSI rates.
It also has the benefit of allowing an otherwise fine SCSI bus that is being
effected by other external factors to continue operation (signal interference
from other sources comes to mind).
--
Doug Ledford <dledford@redhat.com> http://people.redhat.com/dledford
Please check my web site for aic7xxx updates/answers before
e-mailing me about problems
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