There are 4 IOUs in this system; one for each DCU. Each IOU has 2 I/O boards, 4 EMS modules, 16 PCIe slots, and 8 disk drives. Each IOU is represented as /SYS/IOU_x in Oracle ILOM (IOU_0, IOU_1, IOU_2, IOU_3).
There are 64 root complexes in this server (16 per DCU). These root complexes are named pci_0 to pci_63. See Understanding PCIe Slot Root Complex Names and Device Paths for the root complex names of each PCIe and EMS slot in the server.
The following topics explain how to reconfigure I/O paths that are assigned to the PCIe slots on a specific IOU and how to identify root complexes using the Oracle VM Server for SPARC ldm command.
Note - These topics do not describe how to create logical domains using the Oracle VM Server for SPARC software. Refer to the Oracle VM Server for SPARC documentation for complete instructions on installing and configuring logical domains on the server.