I2O Architecture Overview

This paper addresses the I2O architecture and the motivation behind forming the I2O Special Interest Group (SIG). The I2O specification defines an architecture for managing devices that is independent of the implementation of the device and the operating system. The resulting architectural framework, or structure, will promote interoperability, performance, and ease-of-use.
The model behind the I2O architecture is to separate the functionality of the driver, which manages devices, from the specific nature of the operating system that it serves. It acts as an abstraction layer to allow the part of the device driver that actually manages devices to become portable among different operating system environments and to be portable and usable across different vendor implementations.
This paper provides an introduction to the dilemmas that exist in the I/O of server platforms, an overview of the I2O architecture split driver model and message interface, system models available with the I2O architecture and an explanation of the structure and membership of the I2O Special Interest Group.

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