HP LH4r HP Ultra/Wide SCSI 4 GB and 9 GB Hard Disk Drive - Page 33

A, A Jumper Settings, Jumper Legend, SCSI Addresses A0, A1, A2 and A3

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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. 29

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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.