User`s guide

StorageWorks Status Reporting
2.1 Shelf Status
2.1.4 Terminator Board and Jumper Board SHELF_OK Jumpers
The rules for installing jumper W1 on both the terminator board (BA35X–MB)
and the jumper board (BA35X–MC) for SBB shelves shipped before March 1993
2
are as follows:
• Install jumper W1 on the two ground pins as shown in Figure 2–2 when
either of the following conditions is met:
– The host or controller cannot process the SHELF_OK signal.
– You are not sure that the host or controller can process the SHELF_OK
signal.
CAUTION
The terminator and jumper SHELF_OK jumpers are not compatible with
the HSC (hierarchical storage controller) K.scsi channel module. The
K.scsi channel module requires a backplane with connector J17.
Figure 2–2 SHELF_OK Disabled
W1
TERMINATOR JUMPER
W1
CXO-3840A-MC
SHELF_OK
SHELF_OK
2
Remove the left-hand blower from the rear of the shelf. If there are jumper pins adjacent
to the slot 2 connector, there are no jumpers on the terminator and jumper boards. Use
the procedure in the Backplane SHELF_OK Jumper section.
2–6 StorageWorks Status Reporting