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Newsgroups: comp.os.386bsd.questions Path: sserve!newshost.anu.edu.au!harbinger.cc.monash.edu.au!msuinfo!agate!howland.reston.ans.net!gatech!udel!news.sprintlink.net!news.world.net!news.teleport.com!news.dtr.com!bmk From: bmk@dtr.com (bmk) Subject: Re: Disapearing Disks? Organization: DTR Communications -- Portland OR, USA Message-ID: <CvFBMt.4LE@dtr.com> References: <341uf9$d4@shore.shore.net> Date: Wed, 31 Aug 1994 23:52:04 GMT Lines: 32 You're not the only one. It's happening here on a 486DX-66 16MB Adaptec 1542B, 1 Fujitsu m2324f, 1 Maxtor 7213s, 1 CDC 94171-327, 1 NEC CDR-74. Started happening right after I upgraded to 1.1.5.1. In article <341uf9$d4@shore.shore.net>, Robert Withrow <witr@rwwa.com> wrote: >FreeBSD 1.1.5.1, AHA1542, three Maxtor LXT312S drives, one Sony CDU541, >one Viper 2150S tape. > >Recently I have been experencing a situation where, after the system >has been running for a while one or more if the disks will cease to >be available and I get a ``Unit Attention'' on them, and they become >de-configured. Note: by ``running for a while'' I mean running for >a while after being re-booted. The system is *never* turned off for >more than a few seconds, so the problem doesn't seem to be heat >related. I have blown out the dust every now and then. I have >carefully configured the scsi bus so that <5 targets are supplying >terminator power. The cable is custom, since no one makes a scsi cable >with 5 connectors. > >At first I thought this might be a cable problem, but I can generaly >resurect the drives by simply power-cycling the system. Also, I >sometimes see the tape drive ``select light'' flashing on and off >randomly. Why? The problem always seems to happen in the depths >of the night... > >Finally, this seems to be a recent problem, since the system has been >running 1.1.5.1 since it came out and the disks didn't disapear until >last week. >