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Date:      Tue, 16 Jan 1996 12:58:56 +0100 (MET)
From:      Michael Beckmann <petzi@zit.th-darmstadt.de>
To:        scsi@freebsd.org
Subject:   Disk or controller or driver failure ?
Message-ID:  <Pine.BSF.3.91.960116125708.527A-100000@zit1.zit.th-darmstadt.de>

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Hi,

today I found the hard disk in one of my systems spun down. I got lots
of error messages on the console, and after a while the system
rebooted. This is what I read on the console before it rebooted:

sd0(ncr0:0:0): NOT READY asc:4.2

There was a similar problem this morning, which was logged in 
/var/log/messages (I wasn't there):

Jan 16 04:08:55 zit1 /kernel: sd0(ncr0:0:0): Deferred Error: HARDWARE 
FAILURE info:50eb0 asc:15,0 Random 
positioning error field replaceable unit: 1 sks:80,3

Jan 16 04:09:10 zit1 /kernel: sd0(ncr0:0:0): Deferred Error: HARDWARE 
FAILURE info:50eb6 asc:15,0 Random 
positioning error field replaceable unit: 1 sks:80,3

Jan 16 06:11:56 zit1 /kernel: sd0(ncr0:0:0): Deferred Error: HARDWARE 
FAILURE info:50ef0 asc:15,0 Random 
positioning error field replaceable unit: 1 sks:80,3

Jan 16 06:12:00 zit1 /kernel: sd0(ncr0:0:0): Deferred Error: HARDWARE 
FAILURE info:50ef4 asc:15,0 Random 
positioning error field replaceable unit: 1 sks:80,3

Jan 16 06:12:06 zit1 /kernel: sd0(ncr0:0:0): Deferred Error: HARDWARE 
FAILURE info:50ef8 asc:15,0 Random 
positioning error field replaceable unit: 1 sks:80,3

Jan 16 06:12:12 zit1 /kernel: sd0(ncr0:0:0): Deferred Error: HARDWARE 
FAILURE info:50ef4 asc:15,0 Random 
positioning error field replaceable unit: 1 sks:80,3

Jan 16 06:12:16 zit1 /kernel: sd0(ncr0:0:0): Deferred Error: HARDWARE 
FAILURE info:50efc asc:15,0 Random 
positioning error field replaceable unit: 1 sks:80,3


Are these signs of a dying disk or is it the controller ? Or might it be 
a driver problem ? Has anyone seen this before ?

Thanks for any help.

Michael



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