HP DAT drive on PI has trouble with large block sizes

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From: Steve Gaarder
Date: Mon, 21 Dec 1992 17:28

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We have an HP DAT drive connected to a Personal Iris 4D/20 running Irix
4.0.5.  I modified /usr/sysgen/master.d/tpsc to allow the machine to
identify the unit as a DAT, and that seems to have worked.  However,
when I try to use a tar blocking factor greater than 64 (= a block size
greater than 32768), I get the following error:

sc0,7,0: cmd=0x8 disconnected on non-word boundary (addr=C05CB402, 0x0 left).
  Resetting SCSI bus

I have the same problem when I put the drive on a 4D/35.  Any ideas
what's going on here?

Thanks,

Steven Gaarder                              Network and Systems Administrator
gaarder@actech.com                          A C Technology, Ithaca, N.Y., USA

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Newsgroups: comp.sys.sgi.hardware,comp.sys.sgi
Path: arc1-ca.pugleaf.net!sparky!uunet!well!gaarder
From: gaarder@well.sf.ca.us (Steve Gaarder)
Subject: HP DAT drive on PI has trouble with large block sizes
Message-ID: <BzMDuq.E7t@well.sf.ca.us>
Sender: news@well.sf.ca.us
Organization: AC Technology
Date: Mon, 21 Dec 1992 17:28:01 GMT
Lines: 17