HP Integrity Superdome SX1000 User Guide, Sixth Edition - HP Integrity Superdo - Page 28
PCI-X Transfer Board, Core I/O, PCI-X I/O backplane.
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Overview PCI-X I/O PCI-X Transfer Board The PCI-X I/O transfer board connects several power sources and utilities signals from the PCI-X PB to the PCI-X I/O backplane. Core I/O Core I/O refers to the base set of I/O functions required by every partition. The core I/O card uses a standard full-length PCI-X form factor but adds a secondary edge connector in line with its PCI-X connector. PCI-X slot 0 on the I/O backplane has been designed to accommodate the Core I/O requirements without impeding that slot's ability to support standard PCI-X add-in cards. Each partition must have at least one core I/O card in order to boot. Multiple core I/O cards may be present within a partition (one core I/O card is supported per I/O backplane). Only one card's partition interface, however, will be active at a time. Notice that this does not apply to the Ethernet portion of the board, which can be active on multiple boards at the same time. The MP communicates with Core I/O through a USB interface that is internal to the cabinet. The microprocessor on the Core I/O runs Partition Interface firmware. External interfaces are provided for system 10/100BT LAN. An external port may be added to support VGA and mouse. Windows Server 2003, Datatcenter requires a Windows-based LAN card as it does not use the LAN capability provided by the standard Core I/O card. 16 Chapter 1