From owner-freebsd-questions  Thu Jun 12 08:25:10 1997
Return-Path: <owner-questions>
Received: (from root@localhost)
          by hub.freebsd.org (8.8.5/8.8.5) id IAA02643
          for questions-outgoing; Thu, 12 Jun 1997 08:25:10 -0700 (PDT)
Received: from alyssa.ai.net ([205.134.170.2])
          by hub.freebsd.org (8.8.5/8.8.5) with SMTP id IAA02638
          for <questions@freebsd.org>; Thu, 12 Jun 1997 08:25:08 -0700 (PDT)
Received: (from nc@localhost) by alyssa.ai.net (8.6.12/8.6.12) id LAA08726; Thu, 12 Jun 1997 11:09:47 -0400
Date: Thu, 12 Jun 1997 11:09:47 -0400 (EDT)
From: Network Coordinator <nc@ai.net>
To: questions@freebsd.org
Subject: Disk Error - Aborted Commands
Message-ID: <Pine.BSF.3.91.970612110841.8334F-100000@alyssa.ai.net>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
Sender: owner-questions@freebsd.org
X-Loop: FreeBSD.org
Precedence: bulk


I am seeing these errors:

sd0(ahc0:1:0): ABORTED COMMAND info:20080 asc:47,0 SCSI parity error 
field repla
ceable unit: 3
, retries:4
sd0(ahc0:1:0): ABORTED COMMAND info:30050 asc:47,0 SCSI parity error 
field repla
ceable unit: 3
, retries:4
sd0(ahc0:1:0): ABORTED COMMAND info:30050 asc:47,0 SCSI parity error 
field repla
ceable unit: 3
, retries:4
sd0(ahc0:1:0): ABORTED COMMAND info:30050 asc:47,0 SCSI parity error 
field repla
ceable unit: 3
, retries:4
sd0(ahc0:1:0): ABORTED COMMAND info:30050 asc:47,0 SCSI parity error 
field repla
ceable unit: 3
, retries:4
sd0(ahc0:1:0): ABORTED COMMAND info:30050 asc:47,0 SCSI parity error 
field repla
ceable unit: 3
, retries:4

On an ST32155N hard drive. Adaptec disk verify finds no problems.

Any idea what is happening, and how it can be fixed on a production system?

Thanks,

Jerry.