SCSI IDs (8650)


Each SCSI device that is connected to the integrated SCSI-2 controllers needs a unique identification (ID) so that the controllers can identify the devices and ensure that different devices do not attempt to transfer data at the same time. To set IDs for SCSI devices, refer to the instructions that come with those devices.

The SCSI ID for the preinstalled CD-ROM drive is set to 5. The SCSI ID for the backplane is set to 6. The SCSI ID for the SCSI-2 controller is set to 7. The server automatically sets SCSI IDs for hot-swap drives, according to the jumper settings on the SCSI-2 backplanes. If you need to set SCSI IDs for SCSI devices, refer to the instructions that come with these devices.

The server uses the SCSI IDs to send status information to the indicator lights above each hot-swap bay.

Jumpers on each backplane control the SCSI IDs for the bays. To resolve any SCSI ID conflict that might occur, you can change the default ID addresses of the drives by changing the jumper settings on the SCSI backplane. Each SCSI ID must be unique for each drive that you connect to a given backplane.

Each of the two SCSI backplanes in the server supports six of the hot-swap bays. The top six hot-swap drives connect to the upper backplane. the lower six drives connect to the lower backplane. on each set of two rows, the drives are numbered 1 to 6.

The below Table shows the SCSI IDs that you can use for hot-swap drives.

 SCSI IDs for Hot-Swap Drives
   J3      J4      HD1    HD2    HD3    HD4    HD5    HD6
   1-2     1-2     0      1      10     3      4      13
   1-2(1)  2-3(1)  0      1      2      3      4      5
   2-3     2-3     8      9      2      11     12     5
   2-3(2)  1-2(2)  8      9      10     11     12     13
  (1)  Factory default setting for ARRAY models.
  (2)  Factory default setting for Non-ARRAY models.

The processing sequence for SCSI devices is set through the SCSISelect Utility program (refer to the Server SCSI Software User's Guide  for more information). The sequence proceeds from the lowest SCSI ID to the highest (0 to 6, then 8 to 15).

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