HP 3PAR StoreServ Concepts Guide: HP 3PAR OS 3.1.3

Figure 25 T-Class Controller Node Numbering
F-Class Controller Node Numbering
The F-Class systems contains two or four nodes per system. Controller nodes are numbered from
top to bottom node 0 and node 1 for a two node system, and node 0–3 for a four node system.
See Figure 26 (page 74) for an example of controller node numbering in an F-Class system.
Controller Nodes 73