Title
A spin-up saved is energy earned: achieving power-efficient, erasure-coded storage
Abstract
Storage accounts for a significant amount of a data center's ever increasing power budget. As a consequence, energy consumption has joined performance and reliability as a dominant metric in storage system design. In this paper, we show that the structure of an erasure code-- which is generally used to provide data reliability--can be exploited to save power in a storage system. We define a novel technique in power-aware systems called poweraware coding and present generic techniques for reading, writing and activating devices in a power-aware, erasurecoded storage system. While our techniques have an effect on energy consumption, fault tolerance and performance, we focus on a few examples that illustrate the tradeoff between power efficiency and fault tolerance. Finally, we discuss open problems in the space of poweraware coding.
Year
Venue
Keywords
2008
HotDep
power efficiency,poweraware coding,energy consumption,storage system,storage account,erasurecoded storage system,storage system design,erasure-coded storage,power budget,fault tolerance,power-aware system,erasure code,fault tolerant
Field
DocType
Citations 
Power budget,Electrical efficiency,Computer data storage,Computer science,Real-time computing,Fault tolerance,Data center,Erasure code,Energy consumption,Reliability engineering,Erasure
Conference
17
PageRank 
References 
Authors
0.92
12
5
Name
Order
Citations
PageRank
Kevin M. Greenan145122.59
Darrell D. E. Long23111536.40
Ethan L. Miller32870281.96
S. J. Thomas J. E. Schwarz4170.92
Jay J. Wylie568544.29