[9031] in linux-scsi channel archive
Re: [Linux-scsi] Re: Re.: SDT9000 tape drive, aborting command due to timeout
daemon@ATHENA.MIT.EDU (Jason Thomas)
Tue Jun 20 11:01:13 2000
Date: Tue, 20 Jun 2000 18:39:11 +1000
From: Jason Thomas <jason@topic.com.au>
To: "der.hans" <linux-scsi@LuftHans.com>
Cc: linux-scsi@vger.rutgers.edu
Message-ID: <20000620183911.O32197@topic.com.au>
Reply-To: jason@topic.com.au
Mime-Version: 1.0
Content-Type: multipart/signed; micalg=pgp-sha1;
protocol="application/pgp-signature"; boundary="H83aLI5Lttn3Hg7B"
Content-Disposition: inline
In-Reply-To: <Pine.LNX.4.21.0006200045540.1295-100000@gw-int.LuftHans.com>; from linux-scsi@LuftHans.com on Tue, Jun 20, 2000 at 01:05:27AM -0700
--H83aLI5Lttn3Hg7B
Content-Type: text/plain; charset=iso-8859-1
Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable
just to re-confirm, my problem with termination is nothing to do with linux.
it also crashed windows boxes as well. The problem was that the Sony tape
drive was not providing good/correct termination, and in turn was causing
the scsi bux to reset.
Your problem does sound similiar.
The basic rule to follow is:
Termination at the ends of the cable and no were else.
der.hans [linux-scsi@LuftHans.com] wrote:
> Am 19. Jun, 2000 schw=E4zte Michael Kwasigroch so:
>=20
> > Well, I was also wondering...
> >=20
> > To clarify this: I hooked my tape to the end of the internal scsi chain=
and
> > set term power to on.
>=20
> I'm running into what looks like the same problem with an ecrix vxa lvd
> external setup. I was using an ncr8xxx with only external connector and
> got parity errors with the terminator on (terminator light indicated the
> expected single-ended connection). W/o the terminator the drive didn't
> show at all.
>=20
> Hooked it up via an advansys asb3940u2w today. Nothing when hooked on the
> external connector regardless of the terminator. The terminator indicated
> lvd with nothing else on the chain or single-ended when I hooked up a
> single-ended hard drive to the internal connector. The hard drive was
> usable, but still no traces (with the advansys bios interface, during boot
> or via proc) of the tape drive.
>=20
> My cable came out of a box that was used to send on-board scsi to the
> outside of the box, so I took the external cable off the external
> connector on the pci card and hooked it up to the end of the internal
> cable, e.g. the tape drive is still in the external enclosure connected to
> the external cable, but the external cable is now hooked to the end of the
> internal cable through the open case.
>=20
> With this configuration the tape drive works with or without the hard
> drive on the chain when the terminator is on the tape drive, which
> is at the end of the chain. With the hard drive it is single-ended, w/o it
> is lvd. If I disconnect the hard drive and the terminator the tape drive
> works just fine hung off the internal chain.
>=20
> Seems to me that the external interface on the card isn't getting turned
> up. Is that a simple configuration something or another that I'm missing?
>=20
> I've used external devices, mostly hard drives and cdroms, without
> problems in the past. Never had to do anything special for them. I have
> had tons of problems getting tape drives to work, but always accounted
> that to the fact that the only tape drives I got to use at work were the
> ones I salvaged out of the scrap pile ;-). The DLT7000 I got to test for a
> few days worked like a charm, better than under AIX, in fact.
>=20
> A friend bought an ecrix vxa single-ended unit at the same time and has
> had no probs whatsoever with his. I think his is internal, but probably
> have to wait for him to get up in the morning to find out :).
>=20
> > I have an old adatptec 2940 pci with only one 8 bit scsi bus. Works
> > very well for me. I can not say that the sony tape termination ciruit
> > is bad, I only can say that it appears to me (and others ;-) that the
> > scsi interface of the sony tape appears to be **VERY** picky.
>=20
> All the posts I've seen the last couple of days were tape drives. Is this
> something in the tape system? I don't have any other external devices
> right now, but am trying to borrow a hard drive shoebox to test with...
>=20
> ciao,
>=20
> der.hans
> --=20
> # der.hans@LuftHans.com home.pages.de/~lufthans/ www.Opnix.com
> # It's up to the reader to make the book interesting.
> # An author has only the opportunity to make it uninteresting. - der.hans
>=20
>=20
> -
> To unsubscribe from this list: send the line "unsubscribe linux-scsi" in
> the body of a message to majordomo@vger.rutgers.edu
>=20
>=20
> _______________________________________________
> linux-scsi mailing list
> linux-scsi@topic.com.au
> http://mail.topic.com.au/cgi-bin/mailman/listinfo/linux-scsi
--=20
Jason Thomas Phone: +61 2 6257 7111
System Administrator - UID 0 Fax: +61 2 6257 7311
tSA Consulting Group Pty. Ltd. Mobile: 0418 29 66 81
1 Hall Street Lyneham ACT 2602 http://www.topic.com.au/
--H83aLI5Lttn3Hg7B
Content-Type: application/pgp-signature
Content-Disposition: inline
-----BEGIN PGP SIGNATURE-----
Version: PGPfreeware 5.0i for non-commercial use
MessageID: FiH71yI4ikHT6hYNHvMu0Oho6lo21WwG
Comment: Ha Ha
iQA/AwUBOU8tr+3GMESSUoi+EQLD/ACgj5rtS515Dj5iTetL104yaXQq3JUAoP0i
x7q3+l8vKbsL4Gg9/c46r8vW
=AycY
-----END PGP SIGNATURE-----
--H83aLI5Lttn3Hg7B--
-
To unsubscribe from this list: send the line "unsubscribe linux-scsi" in
the body of a message to majordomo@vger.rutgers.edu
