From owner-freebsd-scsi Thu Apr 4 11:53:28 1996 Return-Path: owner-freebsd-scsi Received: (from root@localhost) by freefall.freebsd.org (8.7.3/8.7.3) id LAA24594 for freebsd-scsi-outgoing; Thu, 4 Apr 1996 11:53:28 -0800 (PST) Received: from watson.grauel.com (watson.grauel.com [199.233.104.36]) by freefall.freebsd.org (8.7.3/8.7.3) with ESMTP id LAA24589 Thu, 4 Apr 1996 11:53:26 -0800 (PST) Received: from sparcmill.grauel.com (sparcmill.grauel.com [199.233.104.34]) by watson.grauel.com (8.7.5/8.7.3) with SMTP id PAA05209; Thu, 4 Apr 1996 15:02:55 -0500 (EST) Received: by sparcmill.grauel.com (SMI-8.6/SMI-SVR4) id OAA29313; Thu, 4 Apr 1996 14:53:10 -0500 Date: Thu, 4 Apr 1996 14:53:10 -0500 Message-Id: <199604041953.OAA29313@sparcmill.grauel.com> From: Richard J Kuhns To: "matthew c. mead" Cc: joerg_wunsch@uriah.heep.sax.de, freebsd-scsi@freebsd.org, jmb@freefall.freebsd.org Subject: Re: Archive Anaconda Tape drive 1.35GB && Adaptec 1542CF In-Reply-To: <199604041632.LAA08194@neon.Glock.COM> References: <199604041632.LAA08194@neon.Glock.COM> Sender: owner-freebsd-scsi@freebsd.org X-Loop: FreeBSD.org Precedence: bulk matthew c. mead writes: > mmead writes: > Well, I got the drive in last night, and played with it > both under FreeBSD-current and FreeBSD 2.1.0R. Under 2.1.0R it > probes as such: > > (ncr0:1:0): "ARCHIVE ANCDA 2750 28077 -003" type 1 removable SCSI 1 > Jonathan Bresler posted a great writeup on his experiences with this drive; here's an extract: +++ The drive is advertised as a SCSI-2 drive. FreeBSD reports the drive as SCSI-1. Installing jumper jp6 causes FreeBSD to report the drive as SCSI-2. When operating as a SCSI-1 device (jp6 open) the drive does not conform to SCSI-1. The drive "locks" the scsi bus during at least some mt operations (eg fsf, rewind, rewoffl). When operating as a SCSI-2 device (jp6 shorted) the drive does not lock the scsi bus during the operations listed above. However to get the ncr working with /sbin/dump, the ncr requires a patch extending the latetime from 10 secs to a larger value. presently i am using 20 minutes. ;( but it works and its fast! it does not lock the bus while the dump is being written to tape. +++ > > Once I got the active termination problems out of the way > it's been working excellently (except for maybe requiring me to > mt -f /dev/nrst0 fsf 2 for each file instead of mt -f /dev/nrst0 fsf 1. > Interesting; is your controller an Adaptec? > I did realize after putting this tape drive in my system > that it is a SCSI-I drive. Will this cause my entire SCSI bus > that tape drive is connected to to function as a SCSI 1 bus, or > does my SCSI-IIF drive on that bus still have the advantages of > SCSI-IIF??? Thanks for any information! > -- Rich Kuhns rjk@grauel.com PO Box 6249 100 Sawmill Road Lafayette, IN 47903 (317)477-6000 x319