User guide

Compaq StorageWorks RAID Array 4000 User Guide
Each device on a SCSI bus must have a unique identification number in the
range of 0 to 6. The SCSI ID determines the device priority when attempting
to use the SCSI bus. The highest priority, SCSI ID 7, is reserved for the
controller.
SCSI IDs are assigned automatically in the storage system according to the
drive bay used for each drive. It is not necessary to assign SCSI IDs manually.
The SCSI ID for each bay is indicated on the front panel.
The SCSI IDs assigned to drive bays in the Compaq StorageWorks RA4000
are shown in Figure 1-5.
TROJ006.EPS
SCSI ID's
1.6" Drives
4
3
1
4
1
3
5
4
3
2
1
5
4
3
2
1
0
SCSI ID's
1" Drives
Bus 2
Bus 1
Bus 2
Bus 1
0
0
0
Figure 1-5. SCSI ID numbering in the RA4000