HP 3PAR T-Class Installation and Deinstallation Guide

Numbers for drive chassis are assigned:
• Beginning with 0.
• From bottom to top, beginning with the drive chassis directly above the storage system
backplane.
Drive chassis are always placed above the storage system backplane enclosure and numbered
according to their position in relation to the backplane, as shown in Figure 25 (page 36).
Figure 25 Numbering of Drive Chassis
NOTE: For systems occupying multiple cabinets, drive chassis numbers continue at the bottom
of the next cabinet and progress through the top of the cabinet.
Figure 26 (page 37) and Figure 27 (page 37) illustrate individual drive chassis components and
how they are numbered. Fibre Channel ports in the FC-AL adapters at the sides of the drive chassis
enable connection to the controller nodes.
36 Storage System Physical Layout and Numbering