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Date:      Mon, 17 Jun 1996 18:17:32 -0700
From:      Sean Eric Fagan <sef@kithrup.com>
To:        hardware@freebsd.org
Subject:   Re: Tape drive questions/recommendations
Message-ID:  <199606180117.SAA00342@kithrup.com>

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And the winner is:

	aha0 targ 5 lun 0: type 1(sequential) removable SCSI2
	aha0 targ 5 lun 0: <ARCHIVE Python 00072-0014.BT>
	st0: density code 0x13,  drive empty

Internal unit; it's got a 4 tape cartridge for the autoloader (and the
manual says I can get a 12 tape cartridge, if I feel a need ;)).  Although
it says it's an Archive Python, the documentation that came with it says
it's a Connor.

I spent a total of about two hours getting it set up; the first problem was
getting the damned SCSI cable facing the right way.  The second problem was
that I had to remove the terminators from the tape drive -- with them in,
all the SCSI busses said "Hi!  Here's what I am:" but doing any I/O to
anything other than the tape drive didn't work, and caused a controller
timeout (funky that the new device worked ;)).

Anyway, I fixed that, and then tested it by doing a level 0 backup; that
seemed to work (although I haven't read the tape back yet to verify it).

The doc didn't say whether it was DDS or DDS-2; it does have automagic LZW
compression, but I don't think that that alone makes it DDS-2, no?

One problem, that I also had with the previous tape drive:  if it boots with
a tape mounted, it says that the "density code" is 0x0; with the last one,
that then meant that I would get an error when I wrote a tape.  (This may be
a problem with the 1.1++ SCSI driver, admittedly.)

Sean.



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