Date: Thu, 4 Apr 1996 14:53:10 -0500 From: Richard J Kuhns <rjk@sparcmill.grauel.com> To: "matthew c. mead" <mmead@Glock.COM> 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 Message-ID: <199604041953.OAA29313@sparcmill.grauel.com> In-Reply-To: <199604041632.LAA08194@neon.Glock.COM> References: <no.id> <199604041632.LAA08194@neon.Glock.COM>
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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
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