Townshend Computer Tools DAT-Link User Manual page 28

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Choosing a SCSI ID
If you are using the standard software as supplied by Solbourne, then SCSI ID's 4
and 5 are reserved for tape drives, or devices such as the
have a tape drive connected to your machine, check its SCSI ID setting which should
be either 4 or 5. You can then use the other number for the
ID's are already being used, or if you wish to install multiple
then a custom kernel must be built for the machine | a job for a system
UNIX
administrator. Arbitrary SCSI ID's can then be chosen in the range 0 to 6.
Connecting the
DAT-Link
The next step is to connect the
unterminate the SCSI bus temporarily, it is recommended that you shut-down and
turn o the computer before making the connection.
Make sure the Options switches on the rear of the
up and all the other switches down. Then connect the
using the SCSI cable. If the
to connect the provided SCSI terminator between the cable and the
SCSI connector.
Once it is hooked up and powered on you can reboot the computer. If you have
trouble rebooting, verify that the SCSI ID selected on the
that was in use. Finally, power on the
Con guring the Device Drivers
Next, you need to create a device in the
be a character device with the major and minor device numbers corresponding to
a standard 1/4 inch tape drive at the SCSI address selected on the
DAT-Link
for example, the
commands:
/etc/mknod /dev/datlink0 c 18 5
chmod 666 /dev/datlink0
For SCSI ID 4, the equivalent commands are:
/etc/mknod /dev/datlink0 c 18 4
chmod 666 /dev/datlink0
DAT-Link
The 's SCSI ID switch goes up to 9, but the 8 and 9 settings are only for factory
5
testing. The Solbourne itself uses SCSI ID 7
DAT-Link
to the computer. Since it is necessary to
DAT-Link
DAT-Link
is the last device on the SCSI bus, be sure
DAT-Link
.
/dev
directory called
is set for SCSI ID 5, the device can be created with the
Installation
DAT-Link
. If you already
DAT-Link
. If both
DAT-Link
devices,
5
are set with switch 1
DAT-Link
to the computer
DAT-Link
DAT-Link
was not one
datlink0
. It should
DAT-Link
. If,
's