3PAR InForm® OS 2.2.4 Concepts Guide (320-200085 Rev B, March 2009)

13.5
Controller Node Overview
InForm OS Version 2.2.4 3PAR InForm OS Concepts Guide
■ InServ E-Class Storage Servers always contain two controller nodes. The top controller node
is number 0 and the bottom controller node is number 1.
■ InServ F-Class Storage Servers contain two or four controller nodes. The controller nodes
are numbered 0-3 from top to bottom.
See Figure 13-2 for an example of controller node numbering in an InServ F400 Storage Server
with four controller nodes.
Figure 13-2. F400 Controller Node Numbering
0757_L_R1
0
1
2
3