6
Connecting External SCSI Devices
The system has a dual-channel low-voltage
differential (LVD) SCSI controller integrated on the
system board. Depending on your system
configuration, you can connect external Ultra, Ultra2,
or Ultra3 SCSI devices to this controller through the
SCSI port on the back of the base unit.
CAUTION
On a server system, if you do not
connect an external SCSI peripheral
device to the SCSI port, connect a
terminator module to the port.
NOTE
The figure at right shows the possible
locations for the SCSI port on the back
of the base unit. Only one SCSI port is
available on your system.
To ensure data integrity and promote optimum
performance:
♦
Use the shortest cables possible to connect SCSI
peripheral devices.
♦
Use high-quality SCSI cables to ensure adequate
shielding (impedance of 110 to 135 ohms).
To connect external SCSI devices:
1.
If the system is connected to AC power and
operating, shut down the system and unplug the
system power cord from its AC power outlet.
2.
If a terminator module is connected to the SCSI port on the system, remove it.
3.
Connect one end of a SCSI cable to the SCSI port on the system.
4.
Connect the other end of the SCSI cable to a SCSI peripheral device.
5.
Connect a SCSI cable between SCSI ports on any additional SCSI peripheral devices.
6.
Set the SCSI ID of each peripheral device to a unique SCSI ID number. Do not use any SCSI
ID numbers already used by the system.
SCSI Port
SCSI Port
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