HP Array Controller HSG V8.7 Software - Manual (Page 177)

Assembling an UltraSCSI RAID Subsystem
UltraSCSI RAID Enclosure B–5
Installing Array Controllers and Cache Modules
The master enclosure contains the array controllers and cache
modules. ECBs cannot be installed within the enclosure. In a
departmental server cabinet, install the ECBs in the top cover. In a
data center cabinet (SW600 series), install the ECBs within an ECB
shelf mounted inside the cabinet.
Caution
Two sets of array controllers and cache modules can be
installed within an UltraSCSI RAID subsystem. By default,
the enclosure that contains these components becomes the
master enclosure and must always use PVA address 0.
Note
For detailed array controller, cache module, and ECB
installation procedures and cabling, refer to the array
controller documentation.
Figure B–3 identifies where the two controllers and two cache
modules are located.
Figure B–3 Array Controller and Cache Module Locations
CXO5798A