Chapter 1
Prepare Drive for Installation
6
SCSI
Connector
Power
Connector
CN2
N2
Figure 1-4. Component Identification, Type 3 Drives
Step 3: Set the SCSI Address
The SCSI address is set using jumpers located on the drive. SCSI addresses range
from 0 to 15.
•
Each drive is preset to SCSI address 3.
•
Address 7 is reserved for communications with the SCSI host bus adapter.
Set the drive to the lowest available SCSI address. Address 0 should be used for
the first drive in the system. Typically, address 1 is assigned to the second hard
disk drive, address 2 is assigned to the third drive, and so forth.
This step assumes the jumpers are accessible. If they are not accessible, it may be
necessary to remove the mounting tray or bracket to adjust the settings.
Each device on the channel needs a different SCSI address. If this is the first
hard drive in the system, complete this step to verify the jumper is set correctly. If
this is one of two or more SCSI devices in the system (and not the first drive),
you must change the SCSI address for the drive.
•
If you are connecting an Ultra3 SCSI drive to a narrow SCSI cable
1
and
narrow SCSI controller, set the SCSI address to 0, 1, 2, or 3.
•
If you are connecting an Ultra3 SCSI drive to a wide SCSI cable and wide
SCSI controller, set the SCSI address to 0, 1, 2, 3, 4, 5, or 6.
Detailed descriptions of all the jumpers are provided in the "Jumper Settings"
appendix. Figures 1-7, 1-8, 1-9, 1-10 and 1-11 show the default SCSI address
settings for each drive.
1
When connecting to a HP NetServer E45, a 68-50 pin adapter will also be needed.