6
HP DDS DRIVES USER GUIDE
Setting the SCSI ID
The SCSI ID is set using jumpers on the set of pins beside the
SCSI connector at the rear of the drive, as shown below:
SCSI Jumper Pins
The three significant bits in the ID give a range of 0 through 7
as follows:
SCSI ID
Bit 2
Bit1
Bit0
0
0
0
0
1
0
0
1
2
0
1
0
3
0
1
1
4
1
0
0
5
1
0
1
6
1
1
0
7
1
1
1
1=shorted
0=open
The drive reads the SCSI ID at power-up and during self-test.
Data Compression Control
Data compression can be controlled through the jumper pin
shown above. The pin is only monitored at power-on, and controls
whether data compression is enabled by default. Any subsequent
change to the pin are ignored.
SCSI connector
Power connector
Term power
Bit 2
Bit 1
Bit 0
Compression on/off,
using a control cable
