3PAR InForm® OS 2.2.4 Messages and Operator's Guide (320-200119 Rev A, March 2009)

3.10
Understanding Component Numbering
InForm OS Version 2.2.4
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A controller node assumes the number of the bay that it occupies in the storage server
midplane, as shown in Figure 3-9.
Table 3-3. Number of Controller Nodes by Storage Server Midplane Model Number
Storage server midplane Number of nodes
InServ S400 2 or 4
InServ S800 2, 4, 6, or 8