Fabric-backplane enterprise servers with pluggable I/O sub-system

摘要

A Cost-Reduced Enterprise Server (CRES) system includes a flexible resource-efficient server having a plurality of Processor Memory Boards (PMBs) coupled to an Input/Output Module (IOM). The IOM provides all networking and storage interfaces for the server. The IOM is implemented as a field-replaceable pluggable module, and thus all Input/Output (I/O) capabilities or resources of a CRES system may be upgraded via replacement of the IOM. Each PMB is dividable into a pair of Symmetric MultiProcessor (SMP) complexes, and each complex is coupled to a respective portion of the I/O resources provided by the IOM. Each portion of the IOM provides a pair of I/O daughter-module connectors compatible with standard I/O interfaces, such as Peripheral Component Interconnect (PCI)-X and PCI-Express. One or more CRES systems may be coupled to one or more Enterprise Server (ES) systems to form a multi-chassis server managed collectively as one or more provisioned servers.