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

2.5
Understanding Component Numbering
InForm OS Version 2.3.1 Messages and Operator’s Guide
For multi-cabinet configurations, the storage server midplane to which the controller nodes
are connected is housed in the node cabinet. Additional cabinets connected to the node
cabinet are referred to as drive chassis cabinets.
Table 2-1 describes the pattern for cabinet numbering in multi-cabinet storage systems:
2.2.2 PDU Numbering
The four Power Distribution Units (PDUs) occupy the lowest chassis bay in the cabinet. Each
PDU has two power banks.
Numbers for PDUs are assigned:
■ beginning with 0.
■ from top to bottom.
Table 2-1. Cabinet Numbering for Multi-Cabinet Systems
Cabinet Number
Node cabinet
C00
Additional node cabinets
C10, C20, C30…
Drive cages connecting to the first node cabinet
C01, C02, C03…C09
Drive chassis cabinets connecting to
the second node cabinet
C11, C12, C13…C19
Drive chassis cabinets connecting to the third node
cabinet
C21, C22, C23…C29