Path: utzoo!attcan!uunet!mcsun!cernvax!achille
From: achille@cernvax.UUCP (achille petrilli)
Newsgroups: comp.sys.apollo
Subject: Re: Exabyte (8mm) on DN3500
Keywords: Exabyte, DN3500, How?
Message-ID: <1667@cernvax.UUCP>
Date: 22 Mar 90 16:13:50 GMT
References: <1990Mar21.160013.5672@ecn.purdue.edu>
Distribution: comp
Organization: CERN, European Laboratory for Particle Physics
Lines: 28

In article <1990Mar21.160013.5672@ecn.purdue.edu> curt@ecn.purdue.edu (Curt Freeland) writes:
>We have the drive connected to the SCSI port on the WD disk
>controller.  This is as far as we got.  We do not know what driver 
>software is required, how to order it, how to configure it, ...
>HP/Apollo has not been much help.  We have been calling them for 
>2 months, and still have no answer.  Whatever driver is loaded does not 
>"see" the drive that is out there.  It does find our cartrige
>tape drive when we connect it to the system, and disconnect the 
>Exabyte.

Hi,
to use the Exabyte you should be running 10.2 or have Omniback on 10.[01].
There is no special library for SCSI magtapes. At 10.2 the installation
will create a type manager rmt_scsi and 4 devices, rmts[89] and rmts1[23].
These are for SCSI magtapes target id 1 and 2 respectively and rewind on
close/no rewind on close.
If your mag tape unit should run on a different SCSI id, you have to create
new devices whose major number is the same as rmts8 and minor number is
	4 * target_id [ + 32 ]
Add 32 for the no-rewind-on-close device.
I ran using the sr10.2 rmt_scsi manager Exabyte units, DAT units and IBM
3480 compatible units.
All of those units ran without a problem. Just write/read to/from them
like on real Unix. Unfortunately the /bin/mt program does not
allow you to do anything more than rewind on SCSI mag tape units. I guess
you can position on specific file numbers using ioctl.
Good luck,
	Achille Petrilli