Seagate ST15150N/ND/DC, ST15150W/WD/WC manual WD drives

Barracuda 4 Installation Guide, Rev. E 41

Terminating the drive

To terminate the ST15150W drive, enable the perma- nently mounted IC active terminators by installing an Enable Drive Terminator jumper on J4 pins 11 and 12 as shown in Figure 16. 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 termina- tors and thereby remove internal termination from the drive.

The ST15150WD drive does not have internal termina- tors or any way of adding internal termination. You must provide external active termination (ANSI SCSI-2 Alter- native 2) to the drive when termination is required.

W/WD drives

Pin 1

J4J01

J4 Pin 1

Enable drive terminator.

Disable drive terminator.

Figure 16. Terminating the drive.