3PAR InForm® OS 2.3.1 Messages and Operator's Guide (320-200181 Rev B, February 2010)

3.20
Understanding Component Numbering
Messages and Operator’s Guide InForm OS Version 2.3.1
3.3.6 Power Supply Numbering
Cabinets are divided into upper and lower power domains that contain drive cages or
controller nodes and dedicated power supplies. Drive cages and controller nodes depend on
these power supplies, located at the rear of the system, to supply power from the PDUs at the
bottom of the cabinet.
When viewing the cabinet from the rear, the power supplies in each power domain are
numbered from 0 to 3, from left to right. Figure 3-19 shows an expansion cabinet.
NOTE: For further instructions on drive magazine allocation, see the 3PAR
InServ® T-Class Storage Server Installation and Deinstallation Guide.