Figure 4-2. Expansion Pedestal Slot Locations And Id Addresses - Compaq StorageWorks TM RAID Array 3000 Pedestal Storage Subsystem Hardware User's Manual

Expansion Pedestal Option 4-3
There is a single 68-pin, VHDC female SCSI connector on the rear
panel which interconnects the SBB expansion pedestal to the controller
pedestal.
The rear panel contains an alarm switch and an external fault condition
connector.
The expansion pedestal contains two interchangeable fan-cooled AC
power supplies for redundant power.
The expansion pedestal is equipped with an internal configuration
switch which selects one of the eight (0 through 7) subsystem
configurations (set to the correct configuration setting at the factory to
properly integrate the expansion pedestal to the controller pedestal).
ID = 8
SLOT 0
SLOT 1
SLOT 2
SLOT 3
SLOT 4
SLOT 5
SLOT 6
ID = 14
EXPANSION PEDESTAL
3000-19A

Figure 4-2. Expansion pedestal slot locations and ID addresses