HP 3PAR F-Class, T-Class, StoreServ 10000 Storage Troubleshooting Guide (QL226-96953, May 2013)

Figure 16 Numbering of Drive Chassis Components
Figure 17 Numbering of Disks on a DC4 and DC4 Type-2 Drive Magazine
Numbers for drive chassis components are assigned:
from bottom to top.
from rear to front (in the case of disks).
in the order indicated by Table 4 (page 51).
Table 4 Numbering System for Drive Chassis Components
Running from...Are Numbered...The Following Components...
bottom to top0,1,...Drive cages
left to right0,1FC-AL modules
20 Component Numbering for T-Class Storage System