CacheRAID: An Efficient Adaptive Write Cache Policy to Conserve RAID Disk Array Energy

Author

Tseng-Yi Chen ; Tsung-Tai Yeh ; Hsin-Wen Wei ; Yu-Xun Fang ; Wei-Kuan Shih ; Tsan-sheng Hsu

Author_Institution

Dept. of Comput. Sci., Nat. Tsing Hua Univ., Hsinchu, Taiwan

fYear

2012

fDate

5-8 Nov. 2012

Firstpage

117

Lastpage

124

Abstract

Cloud storage is a hot topic at the moment with Google´s Google Storage, Microsoft´s Sky Drive, iCloud, Drop box, Mozy and dozens of others. Because of these applications, conserving energy of storage systems is becoming a growing concern in current storage technology. The factors of disk power consumption include disk idle time, poor random writing performance and random read in distributed file systems. Hence, we present an adaptive write cache mechanism - Cache RAID. Redundant Arrays of Inexpensive Disk (RAID) is widely used in modern distributed storage systems. Our Cache RAID aims to improve the random access problems that implicitly exist in RAID techniques to create more idle time of hard drives, and conserve RAID disk array energy. The experimental results show that Cache RAID storage system can conserved 50%~70% of the power consumption compared to the conventional software RAID system.

Keywords

RAID; cache storage; cloud computing; distributed databases; energy conservation; network operating systems; power aware computing; Cache RAID; CacheRAID; Drop box; Google Storage; Microsoft Sky Drive; Mozy; RAID disk array energy conservation; RAID techniques; adaptive write cache mechanism; adaptive write cache policy; cloud storage; disk idle time; disk power consumption; distributed file systems; distributed storage systems; hard drives; iCloud; poor random writing performance; random access problems; random read; redundant arrays of inexpensive disk; software RAID system; Aerospace electronics; Arrays; Drives; Hard disks; Power demand; Resource management; Servers; RAID; cache; cloud storage; distributed file system; random access;

fLanguage

English

Publisher

ieee

Conference_Titel

Utility and Cloud Computing (UCC), 2012 IEEE Fifth International Conference on

Conference_Location

Chicago, IL

Print_ISBN

978-1-4673-4432-6

Type

conf

DOI

10.1109/UCC.2012.26

Filename

6424936