Installation
Installing an Internal DAT24 Drive
14
Power On Self Test (Switch 8)
•
Switch 8 ON = Drive performs Power On Self Test
•
Switch 8 OFF = Drive does not perform Power On Self Test (
default
)
Switch 8 enables or disables execution of Power On Self Test (POST) diagnostics when powered on.
If switch 8 is OFF (the default setting), the drive does not perform a POST. If switch 8 is ON, the
drive responds to SCSI commands only after successful completion of the POST (about 5 seconds).
UNIX Operating Systems (Switches 9 and 10)
Switches 9 and 10 configure the DAT24 tape drive for use with UNIX operating systems. For more
information, see Chapter 4, “UNIX Settings” on page 26.
Jumper Settings
Configuration jumpers on the back of the drive control SCSI bus termination and terminator power.
The jumpers can also be used for remote SCSI address selection. Figure 3 on page 14 shows the
locations of the jumper block and jumper settings for the internal DAT drive.
Figure 3.
Location of Jumper Blocks on Internal DAT2 Drives
Settings for each jumper described in detail in the following pages. The default settings are:
•
Terminator power is disabled.
•
Active termination is disabled.
10
9
7
6
5
4
3
2
1
12
11
14
13
16
15
8
Remote SCSI ID
SCSI Termination
(Jumper on pins 11-12
enables active termination)
Termination Power
(Jumper on pins 15-16
enables termination power)
Jumper ON
Jumper OFF
Pins
5-6
OFF
OFF
OFF
OFF
ON
ON
ON
ON
Pins
3-4
OFF
OFF
ON
ON
OFF
OFF
ON
ON
Pins
1-2
OFF
ON
OFF
ON
OFF
ON
OFF
ON
SCSI
ID
0
1
2
3
4
5
6
7
Jumper Block
