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Date: Wed, 22 Jun 2005 07:54:00 -0400
From: Andrew Heybey <ath@niksun.com>
To: Tomas Randa <lists@hosting50.cz>
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Cc: freebsd-stable@freebsd.org
Subject: Re: SCSI troubles
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> I Am running 5.4-STABLE FreeBSD 5.4-STABLE #0: Sun May  8 18:23:40
> CEST 2005 with Adaptec 29320 or 2930U2 controller and with heavy load
> on SCSI I have the following problems ending with system freeze. Have
> anybody some opinion where could be problem?
>
> Thanks a lot Tomas Randa
>
> da0: <SEAGATE ST336754LW 0002> Fixed Direct Access SCSI-3 device
> da0: 320.000MB/s transfers (160.000MHz, offset 63, 16bit), Tagged Queueing Enabled

Seagate had bugs in early U320 firmware versions.  I do not remember
the precise symptoms, so I cannot say for sure that this is your
problem.  But you should start by upgrading your firmware.  For 15k
drives, you want at least firmware version 0006.  See

http://www.seagate.com/support/disc/u320_firmware.html

andrew