20 | Barracuda 4 Installation Guide, Rev. E |
SCSI ID jumpers
Each device on the SCSI chain must have a unique SCSI ID. The host system’s SCSI controller usually uses the
Most Barracuda disc drives are factory set with the SCSI ID set at 0. To change the SCSI ID, refer to the appropriate drive section for your model.
Note. Most SCSI controllers (host adapters) allow you to skip a SCSI ID. For example, you can have ID0, ID1, and ID3 (skipping ID2). Other controllers do not allow this; refer to your system or controller user’s manual for details about its requirements for proper SCSI device installation.
After completing the installation process, if the drive’s LED does not show on/off activity when the host is trying to communicatewith 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 ensurethat you have not violated its SCSI ID numbering recommendations.
