Title :
eRAID: A Queueing Model Based Energy Saving Policy
Author :
Li, Dong ; Wang, Jun
Author_Institution :
University of Nebraska-Lincoln, USA
Abstract :
Recently energy consumption becomes an ever critical concern for both low-end and high-end storage servers. In this paper, we propose an energy saving policy, eRAID (energy-efficient RAID), for mirrored redundant disk array systems. eRAID saves energy by spinning down partial or entire mirror disk group with controllable performance degradation. We first develop an energy-saving model for multi-disk environments by taking into account both disk characteristics and workload features. Then, we develop a queueing model based performance (response time and throughput) control scheme for eRAID. Experimental results show that eRAID can save up to 32% energy without violating predefined performance degradation constraints.
Keywords :
Control systems; Degradation; Delay; Energy consumption; Energy efficiency; Energy management; Energy storage; High performance computing; Measurement; Throughput;
Conference_Titel :
Modeling, Analysis, and Simulation of Computer and Telecommunication Systems, 2006. MASCOTS 2006. 14th IEEE International Symposium on
Print_ISBN :
0-7695-2573-3
DOI :
10.1109/MASCOTS.2006.23