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Date:      Mon, 9 Mar 1998 22:39:12 -0500
From:      "Harry Patterson" <harry@visiontm.com>
To:        "scsi freebsd" <freebsd-scsi@FreeBSD.ORG>
Subject:   CTT8000-S Problems
Message-ID:  <01bd4bd6$17b89820$d8ca4ace@hp.harry.com>

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I've seen several threads here on using the Conner SCSI CTT8000-S based tape
drives. Some writers have indicated that they were able to get the HP
version of the drives to work, and others had difficulty. I don't believe I
saw a final recomendation on how to get these drives working under FreeBSD.
If I missed it I appologize in advance.

The last entry I saw in my search was the following (in excerpt)

From:      J Wunsch <j@uriah.heep.sax.de>
Subject:   Re: BSD Tape Drive Drivers???
In-Reply-To:   <19971231130425.44774@lemis.com>; from Greg Lehey on Wed, Dec
31, 1997 at 01:04:25PM +1030

>As Greg Lehey wrote:
> > I need to find a driver for SCSI Tape drive for FreeBSD that will
> > work with my Seagate Tapestore drive (most software recognizes it as
> > a CTT8000-S drive).

*snip*

>Then you didn't follow this list very closely, Greg. ;-)
>These drives aren't really SCSI, despite of their 50-pin connector
>looking like SCSI.  They violate the SCSI-2 specs.  The violation
>might be benign for you or not, but we've had several cases here.  The
>last i can remember is that it rejects the WRITE FILEMARKS command
>which is mandatory per the standard.
> > Has anyone found a driver that will work?
>> Sure.  It's part of the kernel.
>Well, he's talking about the st(4) driver, most likely.  Anyway,
>without seeing the exact SCSI error message, it's indeed hard toguess.

I just aquired this drive as a Seagate Tapestor (4 gig native) and I am
using an Adaptec 1505 but have also used a 1510. When the system boots it
probes with the following result:

aic0 at 0x340-0x35f irq 11 on isa
aic0 waiting for scsi devices to settle
(aic0:2:0): "CONNER CTT8000-S 1.22" type 1 removable SCSI 2
st0(aic0:2:0): Sequential-Access density code 0x45, 512-byte blocks,
write-enabled

Everything looks pretty good at this point. However, no matter what command
I try I get no response from the drive (no light, no activity, etc) and
eventually get a "Timed out message". This happens with dump and just about
any command, for example:

 mt rewind
st0(aic0:2:0): timed out

Since it probes, I'm assuming the driver is the problem although I've
checked termination, scsi ID, different cables, no tape on boot and
everything else this newbie can determine from the manuals, handbook and
these lists, except debug.

Are these drives supported under FreeBSD?
Is there a patch I need to make to get them to work?
Am I being dense and missing the obvious?

Any help would be appreciated.

Harry


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