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From: jimr@hp-lsd.COS.HP.COM (Jim Rogers)
Newsgroups: comp.sys.hp
Subject: Re: DAT Drive on 345 Questions
Message-ID: <8250028@hp-lsd.COS.HP.COM>
Date: 19 Sep 90 15:54:30 GMT
References: <1990Sep17.194546.14295@batcomputer.tn.cornell.edu>
Organization: HP Logic Systems Division - ColoSpgs, CO
Lines: 35

>We just had a DAT installed on our 345 system in the
>6000 scsi peripherals box. We were told the address was
>set to 0 but can't figure out how to access it. The 
>manual for the 6000 box, which was quite helpful in
>installing a Writable optical disk, lacks much info
>on the DAT. We are running 7.0. 
>What needs to be done to hook access the little fellow?
>What are the major/minor numbers for the scsi tape?
>How would I have known? ('ifconfig -t' has 'stape' -
>is that a scsi tape?) My 7.0 Peripheral Installation
>guide doesn't cover the DAT drive.
>
>We have the scsi driver patch installed.
	
Following is the advice from Wayne Erickson, one of my system
administrators who has gotten past this problem:


    You must have scsitape in your kernel (SAM can do this).

    Major number for scsi tape is 54.
         ex.  /dev/rmt/0m  54 0x0f0202   (rewind)
              /dev/rmt/0mn 54 0x0f0203   (no rewind)

Even though the address switch is not used for the DAT drive, I found that the
factory sets the address to the physical unit in the C2213A box
(ex. if you have a disk drive & a DAT - it will probably
be set to the address of unit 2 located on the back of the box).  
Otherwise, you have to pop the cover of the box & locate the dip switch - this 
should be documented in the 6000 manual.


Jim Rogers
Hewlett Packard
Logic Systems Division