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Date:      Fri, 8 Mar 96 15:16:01 +0100
From:      Jean-Marc Zucconi <jmz@cabri.obs-besancon.fr>
To:        dufault@hda.com
Cc:        freebsd-scsi@freebsd.org
Subject:   Re: MEDIUM ERROR: is my disk really dead ?
Message-ID:  <9603081416.AA19113@cabri.obs-besancon.fr>
In-Reply-To: <199603081051.FAA08882@hda.com> (message from Peter Dufault on Fri, 8 Mar 1996 05:50:59 -0500 (EST))

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>>>>> Peter Dufault writes:

 >> I have problems with a disk. I got media errors, and a losed a
 >> partition, then a second, then a third... (in about 5 days). 
 >> So i reformatted the disk and I stressed it (I filled it 100 times in
 >> 24hours - this is a 1GB disk) and got 'only' 6 errors:
 >> Mar  7 04:12:48 qix /kk: sd2(ncr0:4:0): Deferred Error: MEDIUM ERROR info:9778b  asc:3,0 Peripheral device write fault
 >> Mar  7 04:28:35 qix /kk: sd2(ncr0:4:0): Deferred Error: MEDIUM ERROR info:939d6  asc:3,0 Peripheral device write fault
 >> Mar  7 04:45:19 qix /kk: sd2(ncr0:4:0): Deferred Error: MEDIUM ERROR info:5e230 asc:3,0 Peripheral device write fault
 >> Mar  7 04:45:43 qix /kk: sd2(ncr0:4:0): Deferred Error: MEDIUM ERROR info:6a205 asc:3,0 Peripheral device write fault
 >> Mar  7 04:47:50 qix /kk: sd2(ncr0:4:0): Deferred Error: MEDIUM ERROR info:ad0b8 asc:3,0 Peripheral device write fault
 >> Mar  7 06:05:49 qix /kk: sd2(ncr0:4:0): Deferred Error: MEDIUM ERROR info:199c70 asc:3,0 Peripheral device write fault
 >> 

 > Make sure "AWRE" (automatic write reallocation on error) is on so your
 > drive will map out that sector.  You probably want ARRE on also.  use the
 > "scsi(8)" mode page editor.

I have AWRE and ARRE. It seems that only AWRE worked (the write errors
only occured at the beginning of the test)
:-(

Jean-Marc

 > Peter

 > -- 
 > ***       March 8, 1996: Our ISP is having problems.                      ***
 > ***       "hda.com" connectivity is now intermittent to nonexistent       ***

 > Peter Dufault               Real-Time Machine Control and Simulation
 > HD Associates, Inc.         Voice: 508 433 6936
 > dufault@hda.com             Fax:   508 433 5267
 _____________________________________________________________________________
 Jean-Marc Zucconi       Observatoire de Besancon       F 25010 Besancon cedex
                   PGP Key: finger jmz@cabri.obs-besancon.fr
 =============================================================================



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