HP Ultra/Wide SCSI 4 GB and 9 GB Hard Disk Drive

A Jumper Settings

Each of the drives has an Ultra SCSI-3, single-ended, wide 8 or 16-bit interface

data connection. The hard disk drives are shipped without SCSI terminators. These

drives are ready to use on a SCSI cable with a built-in active terminator.

The terminator power options are:

1. No terminator power is connected to drive terminators or the SCSI bus I/O

pin 26 (recommended).

2. Drive supplies own terminator power only.

3. Drive supplies power to I/O pin 26 of the SCSI bus: no power is supplied

to the internal terminators.

4. Drive supplies terminator power to itself (internal connection) and to I/O

pin 26 of the SCSI bus.

5. Connects terminator power from the SCSI bus I/O pin 26 to the drive’s

internal terminator, if present.

Each hard disk drive is configured at the factory for optimum performance on

most systems. With the possible exception of setting the SCSI address, you should

not change default settings. Changing the disk drive configuration can cause

unexpected or undesirable results.

Jumper Legend

Table A-1 shows the jumper descriptions for all drives. All jumper controlled

features are not available on all drives. (An * indicates a factory default setting.)

Table A-1. General Jumper Description

ID Description

Ax SCSI Addresses (A0, A1, A2 and A3)

See the "Set the SCSI Address" step in the chapter "Prepare

Drive for Installation" for detailed information.

LED Light Emitting Diode Drive Activity Light

Not a jumper in the traditional sense. This is where the drive

activity light connects to the drive.