User's Manual

Chapter 3 Installation
Page 18 STT20000A Product Manual
Three simple steps make up the installation procedure:
1. Configure jumpers.
2. Mount the drive unit.
3. Complete the power and interface connections.
The installation procedure is the same for both models except physically mounting
the unit in the computer. After you configure the jumpers and decide whether or not
you need to add terminators, follow the steps provided for the size of enclosure into
which you are mounting the drive.
Setting jumpers
Figure 3-1 illustrates the location of the jumpers on the bottom of the drive.
Figure 3-1
Location of drive jumpers
SCSI
CONNECTOR
SCSI
PIN 1
POWER
CONNECTOR
NOTE:
Bottom of drive shown.
JUMPER
BLOCK
PIN 1
The following settings should be checked prior to installation. Figure 3-2 shows the
jumper configurations for the various SCSI device addresses (IDs) and for the other
options.
• SCSI ID
• Parity
• Terminator power
• Termination
Use the jumpers to set the SCSI device address. You can also enable parity and
enable terminator power by jumper placements. SCSI terminators must be installed
for the last device on the SCSI bus.