Date: Thu, 6 Jun 1996 09:34:58 -0400 (EDT) From: Peter Dufault <dufault@hda> To: andrew@pubnix.net Cc: dror@hopf.dnai.com, freebsd-scsi@FreeBSD.ORG, freebsd-isp@FreeBSD.ORG Subject: Re: ERROR info:747d9d asc:11,0 Unrecovered read error, other SCSI , issues Message-ID: <199606061334.JAA17446@hda> In-Reply-To: <Pine.BSF.3.91.960606070239.359J@guardian.fortress.org> from "Andrew Webster" at Jun 6, 96 07:10:25 am
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> ate two of these Quantum XP34300 drives in two months, and it wasn't a news > server! > > This was a P133 with AHA-2940 with FreeBSD 2.0.5. What I'd noticed in > both cases was that when lots of seek activity occurs, occasionally, the > drive would stop seeking and a loud "ringing" sound would be heard from > the drive for a couple of seconds, and then it would continue seeking. > I've seen this in a couple of other vendor's drives as well... This may be a thermal recalibration of the servo mechanism. The old CDC drive I have makes a "KA-PROING" noise when it does it and it takes a few seconds to complete. -- Peter Dufault Real-Time Machine Control and Simulation HD Associates, Inc. Voice: 508 433 6936 dufault@hda.com Fax: 508 433 5267
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