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From: Kevin Day <toasty@home.dragondata.com>
Message-Id: <199709282133.QAA16597@home.dragondata.com>
Subject: Archive 96G autoloader
To: freebsd-doc@freebsd.org
Date: Sun, 28 Sep 1997 16:33:11 -0500 (CDT)
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I've had good luck in getting Archive/Conner's 4584NP DAT autoloader drive
to work in FreeBSD.

Here's how it appears on boot:

"ARCHIVE Python 28849-XXX 4.CM" type 1 removable SCSI 2
Sequential-Access density code 0x13,  drive empty

There also is a LUN 1 device showing up under the same ID:

"ARCHIVE Python 28849-XXX 4.CM" type 8 removable SCSI
uk0(ahc0:1:1): Unknown    


If you load the 'ch0' driver for bsd, it will recognize the LUN 1 device as
an autoloader, but it's not necessary to use the drive. Ignore the uk0
device.


The actual tape drive in the unit is at ID 1. Each tape slot has an ID from
0x2 - 0x5 or 0x2 - 0xd depending on if you are using the 4 tape or the 12
tape magazine.

To move a tape, you use this command:

scsi -f /dev/rst0.ctl -s 50 -c "a5 20 0 0 0 <source> 0 <dest> 0 0 0 0"

If you wanted to take the #4 tape (ID 5), and put in the drive (ID 1) you
would issue the command:

scsi -f /dev/rst0.ctl -s 50 -c "a5 20 0 0 0 5 0 1 0 0 0 0"

Then to remove it from the drive, and put it in slot 2(ID 3):

scsi -f /dev/rst0.ctl -s 50 -c "a5 20 0 0 0 1 0 3 0 0 0 0"


Make sense? It will get about 8GB compressed on a 120M dat, with some of the
highest speeds I've seen in quite a while.

Kevin Day
toasty@dragondata.com