The motherboard includes two CMP modules, two MR I/O modules, memory control subsystems, host ID/MAC addresses, and all SPM (Oracle ILOM) logic. The host ID and all MAC addresses reside on a removable SCC PROM. Oracle ILOM system configuration data resides on the service processor module (SPM).
The motherboard also hosts the PS backplane, which distributes main 12V power from the power supplies to the rest of the server. The PS backplane is connected directly to the motherboard through a bus bar and ribbon cable, and includes a top cover safety interlock switch.
These topics describe how to service the motherboard.