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DARAW: A New Write Buffer to Improve Parallel I/O Energy-Efficiency

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Executive Summary

In the past decades, parallel I/O systems have been used widely to support scientific and commercial applications. New data centers today employ huge quantities of I/O systems, which consume a large amount of energy. Most large-scale I/O systems have an array of hard disks working in parallel to meet performance requirements. Traditional energy conservation techniques attempt to place disks into low-power states when possible. In this paper, the authors propose a novel strategy, which aims to significantly conserve energy while reducing average I/O response times.

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