Manufacturer: Seagate Model: ST15150W TD# 270220
Interface... Fast Wide SCSI-2 Formatted Capacity... 4,294 MB
Cylinders 3711 Heads 21 Sectors Variable
Landing Zone Max Cyl Precomp N/A RWC Cyl N/A
Encoding Method RLL 1,7 Xfer/Mb(async/sync) 10/20 MTBF (Hr X 1000) 1000
Form factor 3.5" Novell Y/N Y Height HALF
Power (Typical) 14W Power (Max) 22W Speed 7200
Avg seek (ms) 9 Cache 1024k Mfg. Warranty 5 YRS

NOTE: Can also be operated according to SCSI-1 protocol.
Copyright ⌐ 1996, 1997 Tech Data Corporation

Configuration and Jumper Options

Setting the SCSI ID jumpers

Use the J5 connector to set the SCSI ID, install jumpers on the appropriate pins as shown in the illustration.

Image of Drive showing Jumpers

SCSI ID ID 0/Pin1 ID 1/Pin3 ID 2/Pin5 ID 3/Pin7
0 Out/open Out/open Out/open Out/open
1 In/Ground Out/open Out/open Out/open
2 Out/open In/Ground Out/open Out/open
3 In/Ground In/Ground Out/open Out/open
4 Out/open Out/open In/Ground Out/open
5 In/Ground Out/open In/Ground Out/open
6 Out/open In/Ground In/Ground Out/open
7 In/Ground In/Ground In/Ground Out/open
8 Out/open Out/open Out/open In/Ground
9 In/Ground Out/open Out/open In/Ground
10 Out/open In/Ground Out/open In/Ground
11 In/Ground In/Ground Out/open In/Ground
12 Out/open Out/open In/Ground In/Ground
13 In/Ground Out/open In/Ground In/Ground
14 Out/open In/Ground In/Ground In/Ground
15 In/Ground In/Ground In/Ground In/Ground

Terminating the drive

To terminate the ST15150W drive, enable the permanently mounted IC active terminators by installing an Enable Drive Terminator jumper on pins 11 and 12 of J4 as shown below. If you install one of these models and it is not on the end of the SCSI bus, remove the jumper to disable the permanently mounted IC terminators and thereby remove internal termination from the drive.

Image of Drive showing Jumpers

Terminator power

There are four possible terminator power configurations for the ST15150W drive. (see figure J01 below) You will not normally need to change this option and can leave the drive configured as it was shipped from the factory. 


*	Term power from the drive.			
		Jumper pins 1-2
*	Term power from SCSI bus.			
		Jumper pins 2-4
	Term power to SCSI bus.				
		Jumper pins 1-3
*	Term power to SCSI bus & drive.		
		Jumper pins 1-3 & 2-4

* Valid for single-ended drives only.

Image of Drive showing Jumpers

Synchronizing spindles

Use pins 11 and 12 on the J5 connector to attach the spindle sync cable.

Image of Drive showing Jumpers

Additional jumper options on J5.


	Remote LED connector J5 pin 9
		(top pin is negative) 
		and 10(bottom pin is positive).

Additional jumper options on J4.


	Write protect on (disables writing) 
		jumper pins 1-2.
	Write protect off 
		no jumper on pins 1-2 (default).

Disable parity check jumper pins 7-8 on J4. Enable parity check (default) no jumper on pins 7-8.

Enable motor start. The drive waits for the start Unit command from the host before starting the spindle motor jumper pins 5-6 on J4.

Disable motor start (default). The drive starts according to the Delay Motor Start option setting as described below - No jumper on J4 pins 5-6.

Motor start delay equal to the SCSI ID multiplied by 10 seconds plus 3 seconds - jumper pins 3-4 on J4.

Image of Drive showing Jumpers

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