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Date:      Tue, 02 Apr 2002 09:13:45 -0700
From:      "Justin T. Gibbs" <gibbs@scsiguy.com>
To:        john@johnrshannon.com
Cc:        freebsd-scsi@FreeBSD.ORG
Subject:   Re: AHC - Adaptec 39160 
Message-ID:  <200204021613.g32GDj948010@aslan.scsiguy.com>
In-Reply-To: Your message of "Tue, 02 Apr 2002 05:07:40 MST." <200204021207.g32C7eJn002169@pablo.johnrshannon.com> 

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>FreeBSD 4.5-release
>ahc0: <Adaptec 3960D Ultra160 SCSI adapter>
>ahc1: <Adaptec 3960D Ultra160 SCSI adapter>
>da0: <QUANTUM ATLAS10K2-TY092L DDD6> Fixed Direct Access SCSI-3 device 
>da1: <FUJITSU MAJ3091MP 0114> Fixed Direct Access SCSI-4 device
>
>Are there any know problems with Adaptec 7899G based controllers with two 
>disk drives on the same channel?

No.

>Log extract follows:
>
>
>Apr  1 17:51:08 aslsystem /kernel: ahc1:A:15: parity error detected in DT 
>Data-in phase. SEQADDR(0x1a3) SCSIRATE(0x0)
>Apr  1 18:36:01 aslsystem /kernel: Unexpected non-DT Data Phase

You have a very sick bus.  Have you tried replacing the cable(s) and
verifying your termination?

--
Justin

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