User`s guide

StorageWorks Status Reporting
2.1 Shelf Status
Table 2–1 SHELF_OK Backplane Jumpers
Controller Condition
W1
Position Comments
The SCSI controller cannot process the SHELF_OK
signal.
NONE Do not install the jumper.
An HSC K.scsi controller and a DWZZA–VA SCSI signal
converter are installed.
1 SHELF_OK is routed to slot 0.
The SCSI controller can process the SHELF_OK signal. 2 SHELF_OK is routed to an external cable
connector.
• Do not install W1 when:
– The controller cannot process the SHELF_OK signal.
– You are not sure that the controller can process the SHELF_OK signal
1
.
• When the controller can process the SHELF_OK signal and there is a SCSI
bus signal converter installed in slot 0, install W1 in position 1 (SHELF_OK
EXTERNAL SLOT 0).
• When the controller can process the SHELF_OK signal and a SCSI bus signal
converter is not installed in slot 0, install W1 in position 2 (SHELF_OK
EXTERNAL CABLES).
1
Check the controller documentation.
StorageWorks Status Reporting 2–5