From owner-freebsd-hackers  Thu Oct 22 13:19:25 1998
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Date: Thu, 22 Oct 1998 21:17:15 +0100
From: Karl Pielorz <kpielorz@tdx.co.uk>
Organization: TDX - The Digital eXchange
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To: "Kenneth D. Merry" <ken@plutotech.com>
CC: eric <eric@tarsier.domain.net>, freebsd-hackers@FreeBSD.ORG
Subject: Re: possible CAM problem, ahc/st34371w
References: <199810221958.NAA17781@panzer.plutotech.com>
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"Kenneth D. Merry" wrote:

> > I am using an Adaptec 2940UW:
> >
> >   ahc0: <Adaptec 2940 Ultra SCSI adapter> rev 0x00 int a irq 12 on pci0.9.0
> >   ahc0: aic7880 Wide Channel A, SCSI
> >   Id=7, 16/255 SCBs
> >
> > And a st34371w disk:
>   da0 at ahc0 bus 0 target 0 lun 0
>   da0: <SEAGATE ST34371W 0280> Fixed Direct Access SCSI2 device
>   da0: 40.0MB/s transfers (20.0MHz, offset 8, 16bit), Tagged
Queueing Enabled
>   da0: 4148MB (8496960 512 byte sectors: 255H 63S/T 528C)

I have three of those drives, mine ID a little differently though...

da4 at ahc2 bus 0 target 8 lun 0
da4: <SEAGATE ST34371W 0202> Fixed Direct Access SCSI2 device
da4: 20.0MB/s transfers (10.0MHz, offset 8, 16bit)
da4: 4148MB (8496960 512 byte sectors: 255H 63S/T 528C)

Your firmware seems to be a little older than mine - but the drive also
seems to be saying it will do 40.0MB/s transfers? - The one I have is Wide,
but not Ultra wide... Does yours say in the spec it's UltraWide? (I guess
they may have updated the drive and kept the same ID, i.e. ST34371W)...

I also get problems if I leave Tagged Command Queuing enabled, there again I
also seen to be getting problems with it completely disabled, but not as
many (and nothing sadly relating to Parity)...

Regards,

Karl

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