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SPARC M8 and SPARC M7 Servers Administration Guide

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Updated: September 2017

Understanding the I/O Architecture

The I/O architecture for these SPARC M8 and SPARC M7 servers has changed from previous releases of M-Series servers. For these servers, the CMT processors no longer directly host the PCI Express fabric. For these servers, the PCIe fabric has been moved to an I/O controller chip called the I/O hub (IOH). These topics describe the I/O architecture:

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