@inproceedings{b9ace9418f7c48be94ee74ade831cafc,
title = "Analysis of disk power management for data-center storage systems",
abstract = "Up to one third of the electricity supplied to a data center is required for the operation of the storage subsystem. A typical data-center workload, characterized by short idle periods, prevents traditional disk power management (DPM) from saving energy. This paper starts with an analysis of DPM's traditional timer-based disk spin-down policy. Next, we examine how a multispeed disk adapts DPM to data-center workloads. Finally, we determine how to shape the workload to enable DPM on conventional server disks. All analysis is based on an analytical model for the energy consumed by a disk during an idle period. In addition, we assume standby power to be non-negligible. The results are that (1) the competitive ratio of a threshold-based disk spin-down policy depends on the ratio of standby power to idle power, (2) the notion of break-even time can be generalized for multispeed disks, and (3) DPM saves most energy when mean idle time and idle-time variance are maximized. With this analysis, the authors intend to stimulate the design of new data-center file and storage systems that optimally exploit DPM to save energy.",
keywords = "EWI-23155, Reliability, Performance, METIS-296349, IR-85289, Algorithms, Design",
author = "Tom Bostoen and Mullender, {Sape J.} and Yolande Berbers",
note = "10.1145/2208828.2208830 ; 3rd International Conference on Future Energy Systems: Where Energy, Computing and Communication Meet, e-Energy 2012 ; Conference date: 09-05-2012 Through 11-05-2012",
year = "2012",
month = may,
day = "11",
doi = "10.1145/2208828.2208830",
language = "Undefined",
isbn = "978-1-4503-1055-0",
publisher = "Association for Computing Machinery",
pages = "2",
booktitle = "Proceedings of the third International Conference on Future Energy Systems: Where Energy, Computing and Communication Meet (e-Energy 2012)",
address = "United States",
}