LogStore: toward energy-proportional storage servers

  • Authors:

  • Wei Zheng;Ana P. Centeno;Frederic Chong;Ricardo Bianchini

  • Affiliations:

  • Rutgers University, Piscataway, NJ, USA;Rutgers University, Piscataway, NJ, USA;University of California at Santa Barbara, Santa Barbara, CA, USA;Rutgers University, Piscataway, NJ, USA

  • Venue:
  • Proceedings of the 2012 ACM/IEEE international symposium on Low power electronics and design
  • Year:
  • 2012

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Abstract

Storage servers consume significant amounts of energy and are highly non-energy-proportional. Fortunately, researchers have proposed disks that adjust their rotation speeds based on utilization. However, these disks either pose significant engineering challenges (by having too many speeds) or adjust behavior only at a coarse grain (by having just two speeds). In this paper, we propose LogStore, a storage system that enables two-speed disks to achieve substantially increased energy proportionality and, consequently, lower energy consumption. Our evaluation with real I/O workloads shows that LogStore can decrease energy consumption significantly, even for very tightly provisioned servers, with a negligible impact on aggregate throughput.