Seagate Jumper Settings For N/W/WC SCSI Hard-Disk Drive

A	  	Jumper Block J6
B	  	Jumper Block J2
C	  	The Front Of The Drive
D	  	Single 80-Pin I/O and Power Connector

General Information
There are two types of jumper plugs: one for use with the J2 jumper and the other for use with the J6 and J1-auxiliary jumpers. The following illustrations identify each plug type. Use the plugs only on those jumpers for which they are intended.

Both the J6 and J1-auxiliary jumpers have pins for selecting the SCSI drive ID and for connecting the remote LED cable. Only one or the other of these jumpers should be used. Using both jumpers at the same time, however, does not damage the drive.

If the drive is the only device on the bus, attach it to the end of the SCSI bus cable. Termination must be enabled on the W model by setting the TE jumper on J2. On the WC model, an external terminator must be used (not included with the drive).

J6 Jumper Settings
Note
Reserved jumpers are grayed out in the following table.
Do not remove the cover that is installed over these jumpers.

J6 Jumper Settings
— Model N

SCSI ID	  Jumpers
0
1
2
3
4
5
6
7

J6 Jumper Settings
— Model W and Model WC

SCSI ID	  Jumpers	SCSI ID	  Jumpers
0		8
1		9
2		10
3		11
4		12
5		13
6		14
7		15

J2 Jumper Settings
— Model N and Model W

Jumper(s)	Setting	Description
TE	 	(Default) The on-board (nonremovable) termination circuits are enabled (connected to the I/O lines).
		Termination circuits are not enabled (not connected to I/O lines).
DS ME	 	(Default) Drive spindle starts immediately after power-up.
		Drive spindle does not start until a Start Unit command is received from the host computer.
		After power is applied, drive spindle start-up is delayed by 12 seconds multiplied by the SCSI ID. For example, drive 0 starts immediately, drive 1 starts after a 12-second delay, drive 2 starts after a 24-second delay, and so on.
		Drive spindle starts when a Start Unit command is received from the host computer. The delayed-start feature is overridden.
WP		Write-protects the hard-disk drive.
	 	(Default) Drive is not write-protected.
PD		Parity checking and parity error reporting by the drive is disabled.
	 	(Default) Drive checks for parity and reports the results to the host.
SS		Reserved.
TP TP		No terminator power is connected to drive terminators or to SCSI bus I/O cable.
	 	(Default) Drive supplies its own terminator power only.
		Drive supplies power to SCSI bus I/O cable but not to the internal terminators.
		Drive supplies terminator power to itself (internal connection) and to the SCSI bus I/O cable.
		Terminator power is connected from the SCSI bus I/O TERMPWR cable to the drive's internal terminators.

J2 Jumper Settings
— Model WC

Jumper(s)	Setting	Description
TE*	 	(Default) Not used.
DS ME	 	(Default) Drive spindle starts immediately after power-up.
		Drive spindle does not start until a Start Unit command is received from the host computer.
		After power is applied, drive spindle start-up is delayed by 12 seconds multiplied by the SCSI ID. For example, drive 0 starts immediately, drive 1 starts after a 12-second delay, drive 2 starts after a 24-second delay, and so on.
		Drive spindle starts when a Start Unit command is received from the host computer. The delayed start feature is overridden.
WP		Write-protects the hard-disk drive.
	 	(Default) Drive is not write-protected.
PD		Parity checking and parity error reporting by the drive is disabled.
	 	(Default) Drive checks for parity and reports the results to the host.
SS		Reserved.
TP TP*		Not used.

Note
May be labeled on the jumper as "RES."
J1-Auxiliary Jumper Settings

SCSI ID	Jumpers	SCSI ID	Jumpers	SCSI ID	Jumpers
0		6		11
1		7		12
2		8		13
3		9		14
4		10		15
5