Open SCSI Integrator's Manual for NonStop S-Series Servers

Integrating Hardware

Open SCSI Integrator’s Manual for NonStop Servers—422988-002

3-7

Assigning SCSI ID Numbers

Whether your system operates on a single-path bus configuration or a dual-path bus

configuration, an external device can be assigned a SCSI ID in the range of 0 through 5.

The SCSI ID for the SAC is determined by two factors:

•

The ID number of the SAC the SCSI device is connected to

•

The slot the ServerNet/DA occupies

Figure 3-5

illustrates how SCSI ID numbers correspond to SACs on a 6760

ServerNet/DA.

Note. Do not configure two devices on the same SCSI bus with the same SCSI ID. If you do

configure two devices on the same SCSI bus with the same SCSI ID, results are unpredictable.

Figure 3-5. SCSI ID numbers and SACs on the 6760 ServerNet/DA

Slots 52 and 54Slots 51 and 53

SAC 4

SCSI ID 6

SAC 3

SCSI ID 7

SAC 2

SCSI ID 6

SAC 1

SCSI ID 7

SAC 4

SCSI ID 7

SAC 3

SCSI ID 6

SAC 2

SCSI ID 7

SAC 1

SCSI ID 6

026CDT .CDD