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Date:      Tue, 16 Jan 1996 13:59:39 +0100
From:      se@zpr.uni-koeln.de (Stefan Esser)
To:        Michael Beckmann <petzi@zit.th-darmstadt.de>
Cc:        hardware@FreeBSD.org, scsi@FreeBSD.org
Subject:   Re: Disk or controller or driver failure ?
Message-ID:  <199601161259.AA00719@Sysiphos>
In-Reply-To: Michael Beckmann <petzi@zit.th-darmstadt.de> "Disk or controller or driver failure ?" (Jan 16, 12:58)

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On Jan 16, 12:58, Michael Beckmann wrote:
} Subject: Disk or controller or driver failure ?
} 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

[ ... ]

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

Well, I'd take those messages to mean what they say:

HARDWARE FAILURE: Random positioning error.

This is an extended error code, returned by the hard disk,
and printed by the generic SCSI code.

Make backups !

Regards, STefan

PS: You may want to check the power supply, too. This 
    could be caused by an out of spec 12V supply ...
-- 
 Stefan Esser, Zentrum fuer Paralleles Rechnen		Tel:	+49 221 4706021
 Universitaet zu Koeln, Weyertal 80, 50931 Koeln	FAX:	+49 221 4705160
 ==============================================================================
 http://www.zpr.uni-koeln.de/~se			  <se@ZPR.Uni-Koeln.DE>



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