Setting the Scsi ID jumpers

Elite 9 Installation Guide, Rev. B

Each device on the SCSI chain must have a unique SCSI ID. The host system’s SCSI controller usually uses the highest-numbered ID available (ID7 in non-wide sys- tems); therefore the lower-numbered SCSI IDs are nor- mally used for the other SCSI devices such as this Elite disc drive.

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.

Use connector J4A to set the SCSI ID (Figure 2). Most Elite disc drives are factory set with the SCSI ID set at 0. To change the SCSI ID, install jumpers on the appropri- ate pins as shown in the illustration.

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 numbering recommendations.