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

4.4
Understanding Component Numbering
InForm OS Version 2.2.4
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The service processor allows 3PAR to identify, research, diagnose, and even resolve potential
problems remotely.
Because the service processor is capable of supporting multiple storage servers at the same
operating site, not all cabinets contain a service processor. However, when present, the service
processor is usually installed directly above the PDUs and below the drive cage (see Figure 4-1).
The service processor is powered internally by the storage server and does not require an
external power connection.
When a cabinet does not include a service processor, a filler panel covers the area of the
cabinet that the service processor normally occupies.
4.3 Understanding Component Numbering
Because of the almost unlimited number of potential storage server configurations, 3PAR has
standardized component placement and internal cabling to simplify installation and
maintenance. For this reason, system components are placed in the cabinet according to the
principles outlined in this section and numbered according to their order and location in the
cabinet.
4.3.1 Cabinet Numbering
The InServ F-Class Storage Server 2M (40U) storage server cabinet is an EIA-standard rack that
accepts storage server components. Numbers for chassis bays are assigned:
■ beginning with 0.
■ from top to bottom.
Figure 4-3 illustrates numbering of chassis bays in a 3PAR cabinet.