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Date: Mon, 24 Jun 1996 01:47:17 +0200
From: wjw@IAEhv.nl (Willem Jan  Withagen)
Message-Id: <199606232347.BAA03063@iaehv.IAEhv.nl>
To: rashid@rk.ios.com
Subject: Re: AHC/SCSI stability (resets/timeouts on SCSI)
Newsgroups: list.freebsd.stable
In-Reply-To: <199606181359.JAA13394@rk.ios.com>
Organization: Internet Access Eindhoven, the Netherlands
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In article <199606181359.JAA13394@rk.ios.com> you write:
>	I run rather large CCD PC here - it has 3 AHA2940W
>	and 6 HDDs in it ( it's a news server) .
>	Works very fast - reads/writes at ~18MBs.

> /kernel: sd5(ahc2:1:0): UNIT ATTENTION asc:29,0
> un 11 21:49:49 news /kernel: sd5(ahc2:1:0):  Power on, reset, or bus device reset occurred field replaceable uni
> t: 1
> Jun 11 21:49:49 news /kernel: , retries:4
> Jun 11 21:49:49 news /kernel: biodone: buffer already done

Let me that a shot:
	Micropolis 4.3Gb disks?

At least that is what we're seeing a lot on our heavy loaded disk.
And the only way to get them online again, is a powercycle of both disk and
server. I called Micropolis and it was a "known" possibility for one of the
batches. I could get "free" replacements.

--WjW
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