ST15150N/ND/W/WD Installation Guide, Rev. B
19
Most Barracuda disc drives are factory set with the
SCSI ID set at 0. To change the SCSI ID, install jumpers
on the appropriate pins as shown in the illustration
provided for your model (N/ND or W/WD). If, after
completing the installation process, the drive's LED
does not show on/off activity when the host is trying to
communicate with the drive, a duplicate SCSI ID may
be the problem. If this is the case, change the ID so that
each device on the SCSI chain has its own unique ID.
Also check your system or controller user's manual to
ensure that you have not violated its SCSI ID number-
ing recommendations.