Subject: Re: DAT support?
To: Jukka Marin <>
From: Jason Thorpe <>
List: current-users
Date: 01/02/1997 02:08:24
On Mon, 30 Dec 1996 10:42:36 +0200 (EET) 
 Jukka Marin <> wrote:

 > What kind of a DAT drive do you recommend for a NetBSD (1.2/i386) system?
 > Do we have support for DAT changers (would be nice with AMANDA - could
 > create backups of all machines automatically)?  What are the DS-1, DDS-1,
 > and DDS-2 types mentioned for different DAT drives?

This is from the dmesg output of mail.NetBSD.ORG...

[ Frobbed to fit 80 columns :-) ]

ahc0: target 5 synchronous at 5.0MHz, offset = 0xf
st0 at scsibus0 targ 5 lun 0: <ARCHIVE, Python 28849-XXX, 4.98> SCSI2
    1/sequential removable
st0: drive empty
ch0 at scsibus0 targ 5 lun 1: <ARCHIVE, Python 28849-XXX, 4.98> SCSI2
    8/changer removable
ch0: 4 slots, 1 drive, 1 picker

This is a DDS-1/DC drive and 4-tape changer; a 13-tape magazine is available.
I purchased this drive from ... I think they
only have the DDS-2 versions available now...

I've also been told of the Exabyte changers working, and have personally
used a 30+ 8mm changer with the "ch" driver.  I wrote the current
"ch" driver, so if you have problems with it, you can contact me.

The changer driver has a companion program called chio(1) which provides
command-line access to the changer... there is also an ioctl suite; see
<sys/chio.h> for details.

Jason R. Thorpe                             
NASA Ames Research Center                               Home: 408.866.1912
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