Digital Equipment Corporation Storage Works Betriebsanweisung PDF herunterladen (Seite 24)

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

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

TERMINATOR JUMPER

CXO-3840A-MC

SHELF_OK

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.

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Digital Equipment Corporation Storage Works Betriebsanweisung Seite 24