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Proceedings. 10th IEEE International Symposium on Modeling, Analysis and Simulation of Computer and Telecommunications Systems (2002)
Fort Worth, Texas
Oct. 11, 2002 to Oct. 16, 2002
ISBN: 0-7695-1840-0
pp: 0053
ABSTRACT
Power dissipation by storage systems in mobile computers accounts for a large percentage of the power consumed by the entire system. Reducing the power used by the storage device is crucial for reducing overall power consumption. A new class of secondary storage devices based on microelectromechanical systems (MEMS) promises to consume an order of magnitude less power with 10-20 times shorter latency and 10 times greater storage densities. We describe three strategies to reduce power consumption: aggressive spin-down, sequential request merging, and sub-sector accesses. We show that aggressive spin-down can save up to 50% of the total energy consumed by the device at the cost of increased response time. Merging of sequential requests can save up to 18% of the servicing energy and reduce response time by about 20%. Transferring less data for small requests such as those for metadata can save 40% of the servicing energy. Finally, we show that by applying all three power management strategies simultaneously the total power consumption of MEMS-based storage devices can be reduced by about 54% with no impact on I/O performance.
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CITATION

S. A. Brandt, E. L. Miller, D. D. Long and Y. Lin, "Power Conservation Strategies for MEMS-Based Storage Devices," Proceedings. 10th IEEE International Symposium on Modeling, Analysis and Simulation of Computer and Telecommunications Systems(MASCOTS), Fort Worth, Texas, 2002, pp. 0053.
doi:10.1109/MASCOT.2002.1167060
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