Modeling Hard-Disk Power Consumption. John Zedlewski, Sumeet Sobti, Nitin Garg, Fengzhou Zheng, Arvind Krishnamurthy and Randolph Wang. Proceedings of the 2nd Conference on File and Storage Technologies, San Francisco, California. Mar 2003.
Abstract
Excessive power consumption is a major barrier to the market acceptance of hard disks in mobile electronic devices. Studying and reducing power consumption, however, often involves running time-intensive disk traces on real hardware with specialized power-monitoring equipment. This paper presents Dempsey, a disk simulation environment that includes accurate modeling of disk power consumption. It includes tools to automatically extract performance and power consumption parameters from a given disk drive, without needing detailed specifications from the manufacturer. The tools use stimulus-based measurements to extract these parameters. Dempsey is experimentally validated for two mobile hard disks, namely, the 1 GB IBM Microdrive and the 5 GB Toshiba Type II PC Card HDD. In the worst observed case, Dempsey's estimate of power consumption differs from the measured consumption by 7.5%. This demonstrates that disk power consumption can be simulated both efficiently and accurately.
BibTeX Entry
@InProceedings{ZSG+:modeling,
author = "John Zedlewski and Sumeet Sobti and Nitin Garg and Fengzhou Zheng
and Arvind Krishnamurthy and Randolph Wang",
title = "Modeling Hard-Disk Power
Consumption",
booktitle = "Proceedings of the 2nd Conference on File and Storage Technologies, San Francisco, California",
pages = "217--230",
year = "2003",
month = mar,
}
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