How F20 Modules are connected in X4270 M2 in Exadata.

<- -="" exadata="" nbsp=""><----- ------="" linux="" software=""><-- --="" active="" pcie="" risers=""><--- -----="" aura="" card="" nbsp="">

Exadata s/w  -> linux  -> scsi -> mptsas -------> riser 1 IDT --------> IOC1 (slot 1) ------> 4 FMODS
                                            |                       |
                                            |                        ----> IOC0 (slot 4) ------> 4 FMODS
                                            |
                                              ------> riser 2 IDT --------> IOC3 (slot 2) ------> 4 FMODS
                                                                    |
                                                                      ----> IOC2 (slot 5) ------> 4 FMODS
.