HP 3PAR InForm OS 3.1.1 Messages and Operators Guide

Understanding Component Numbering
Because of the large number of potential configurations, we have standardized component
placement and internal cabling to simplify installation and maintenance. System components are
placed in the cabinet according to the principles outlined in this section and numbered according
to their order and location in the cabinet.
NOTE: For information about standardized cabling, see the HP 3PAR StoreServ 10000 Storage
Installation and Deinstallation Guide.
Cabinet Numbering
The 2M cabinet is an EIA-standard rack and houses the storage system components. A storage
system can be housed in a single or multiple cabinets. When multiple cabinets are required, the
first cabinet (known as the controller node cabinet ) holds the node chassis populated with controller
nodes. Any additional cabinets, or drive chassis cabinets, store the additional drive chassis that
do not fit into the controller node cabinet.
Table 8 (page 37) describes the pattern for cabinet numbering in multi-cabinet storage systems
and for operating sites with multiple systems:
Table 8 Cabinet Numbering
NumberCabinet
C0Controller node cabinet
C0, C1, C2-C07Drive chassis cabinets connecting to the first node cabinet
Power Distribution Units Numbering
For each cabinet, four Power Distribution Units (PDUs) are mounted vertically on the left side of the
rear of the cabinet. Numbers for PDUs are assigned beginning with 0, from bottom to top.
Figure 37 (page 38) illustrates the four PDUs in an HP 3PAR cabinet.
Understanding Component Numbering 37