DocumentCode :
2265398
Title :
Examining Energy Use in Heterogeneous Archival Storage Systems
Author :
Adams, Ian F. ; Miller, Ethan L. ; Storer, Mark W.
Author_Institution :
Univ. of California, Santa Cruz, CA, USA
fYear :
2010
fDate :
17-19 Aug. 2010
Firstpage :
297
Lastpage :
306
Abstract :
Controlling energy usage in data centers, and storage in particular, continues to rise in importance. Many systems and models have examined energy efficiency through intelligent spin-down of disks and novel data layouts, yet little work has been done to examine how power usage over the course of months to years is impacted by the characteristics of the storage devices chosen for use. Long-term power usage is particularly important for archival storage systems, since it is a large contributor to overall system cost. In this work, we begin exploring the impact that broad policies (e.g. utilize high-bandwidth devices first) have upon the power efficiency of a disk based archival storage system of heterogeneous devices over the course of a year. Using a discrete event simulator, we found that even simple heuristic policies for allocating space can have significant impact on the power usage of a system. We show that our system growth policies can cause power usage to vary from 10% higher to 18% lower than a naive random data allocation scheme. We also found that under low read rates power is dominated by that used in standby modes. Most interestingly, we found cases where concentrating data on fewer devices yielded increased power usage.
Keywords :
computer centres; discrete event simulation; power consumption; records management; storage management; data centers; discrete event simulator; energy use examination; heterogeneous archival storage systems; long-term power usage; Bandwidth; Data models; Drives; Generators; Layout; Proposals; Reliability; Archival; Energy; Storage;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Modeling, Analysis & Simulation of Computer and Telecommunication Systems (MASCOTS), 2010 IEEE International Symposium on
Conference_Location :
Miami Beach, FL
ISSN :
1526-7539
Print_ISBN :
978-1-4244-8181-1
Type :
conf
DOI :
10.1109/MASCOTS.2010.38
Filename :
5581584
Link To Document :
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