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Date: Sun, 23 Jan 2011 13:36:00 +0100
From: Fabian Wenk <fabian@wenks.ch>
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Subject: Re: bg.freebsd.org down
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Hello Dimitar

On 23.01.11 12:31, Dimitar Vassilev wrote:
> Situation is that the ARC1120 we got behaves flaky and marks whenever
> it wants some of the disks as bad.

A few years ago I had the same problem with an ARC-1220 and 
Western Digital RE2 WD5000YS disks. The Areca marked the disks as 
bad, but after removing and reinserting it back, it was working 
fine again.

It was a bug in the firmware of the disks, sometimes they took too 
long to respond to S.M.A.R.T requests from the RAID controller and 
then the Areca decided that this disk was broken.

A firmware upgrade from WD fixed the problem, but for doing the 
upgrade the SATA disks needed to be attached to a regular SATA 
controller (not the Areca RAID controller). The flash utility 
needed to be started from a DOS disk.


bye
Fabian