HS-RAI[D.sup.2]: optimizing small write performance in HS-RAID

HS-RAID (Hybrid Semi-RAID), a power-aware RAID, saves energy by grouping disks in the array. All of the write operations in HS-RAID are small write which degrade the storage system's performance severely. In this paper, we propose a redundancy algorithm, data incremental parity algorithm (DIP),...

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Bibliographic Details
Published inJournal of Electrical and Computer Engineering
Main Authors Dong, Yongfeng, Liu, Jingyu, Yan, Jie, Liu, Hongpu, Wu, Youxi
Format Journal Article
LanguageEnglish
Published John Wiley & Sons, Inc 01.01.2016
Subjects
Algorithms
Energy use
Hard disks
Properties
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Summary:HS-RAID (Hybrid Semi-RAID), a power-aware RAID, saves energy by grouping disks in the array. All of the write operations in HS-RAID are small write which degrade the storage system's performance severely. In this paper, we propose a redundancy algorithm, data incremental parity algorithm (DIP), which employs HS-RAID to minimize the write penalty and improves the performance and reliability of the storage systems. The experimental results show that HS-RAI[D.SUB.2] (HS-RAID with DIP) is faster and has higher reliability than HS-RAID remarkably.
ISSN:2090-0147
DOI:10.1155/2016/7341735