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Date:      Fri, 28 Feb 2003 08:00:34 -0600
From:      Len Conrad <LConrad@Go2France.com>
To:        freebsd-hardware@freebsd.org
Subject:   Re: ATA RAID Suggestions
Message-ID:  <5.2.0.9.0.20030228075650.045ef3d0@mail.go2france.com>
In-Reply-To: <1046439893.3e5f67d51e98c@www.nexusmail.uwaterloo.ca>
References:  <001c01c2dede$0a979f10$0200a8c0@noemie> <20030227143521.4371.qmail@nym.alias.net> <001c01c2dede$0a979f10$0200a8c0@noemie>

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> > > > I am looking for ATA RAID suggestions.  I have tried a Promise FastTrak
> > TX2000
> > > > with 2 Hot-Swap Trays.

I can confirm that the TX2000 + Promise ATA cables + ATA133 disks run only at
ATA33 at fbsd 4.7

ad4: DMA limited to UDMA33, non-ATA66 cable or device
ad6: DMA limited to UDMA33, non-ATA66 cable or device
ar0: 39083MB <ATA SPAN array> [4982/255/63] status: READY subdisks:
  0 READY ad4: 39083MB <Maxtor 6Y040L0> [79408/16/63] at ata2-master UDMA33
ar1: 39083MB <ATA SPAN array> [4982/255/63] status: READY subdisks:
  0 READY ad6: 39083MB <Maxtor 6Y040L0> [79408/16/63] at ata3-master UDMA33

After discussing with Soeren Schmidt, the above dmesg outpout is not a 
cable problem or device problem but some kind of error in the chain, 
resulting in FreeBSD running the disk at 33.

Len


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