Jumpers - HP xw4300 Service And Technical Reference Manual

B.4

Jumpers

All SCSI controllers require a unique SCSI ID (0–15) for each SCSI device installed.
The controller identifies a SCSI device by its SCSI ID number rather than its location. Moving a SCSI device from one
position to another on the SCSI chain does not affect communication between the controller and the device. The reserved
and available SCSI ID numbers are displayed in the following list:
• 0 is reserved for the primary hard drive (Windows only).
• 7 is reserved for the SCSI controller.
• 1 through 6 and 8 through 15 are available for all other SCSI devices.
When 0 is used for the primary hard drive, set the second hard drive to 1, the third to 2, and so on.
To set the SCSI ID on a drive, see the instructions on top/back of the hard drive for the correct jumper settings. The drive
probably displays a diagram of the jumper block. This diagram shows you which blocks to cover with your jumper to
get the desired ID.
For example, if the drive must be set to 3, the drive might show that the 4 ID bits are at the far left of the connector (ID0,
ID1, ID2, and ID3), then using the jumpers provided, cover the pins to set the SCSI ID.
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