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학술지 A Highly Reliable Storage Systems Based on SSD Array for IoE Environment
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저자
안후영, 김준수, 이윤준
발행일
201710
출처
International Journal of Grid and High Performance Computing, v.9 no.4, pp.1-15
ISSN
1938-0259
출판사
IGI Publishing
DOI
https://dx.doi.org/10.4018/IJGHPC.2017100101
초록
Devices in IoE (Internet of Everything) environment generate massive data from various sensors. To store and process the rapidly incoming large-scale data, SSDs are used for improving performance and reliability of storage systems. However, they have typical problem called write amplification which is caused by out-of-place updates characteristics. As the write amplification increases, it degrades I/O performance and shortens SSDs' lifetime. This paper presents a new approach to reduce write amplification of SSD arrays. To solve the problem, this paper proposes a new parity update scheme, called LPUS. LPUS transforms random parity updates to sequential writes with additional log blocks in SSD arrays by using parity logs and lazy parity updates. The experimental results show that, LPUS reduces write amplification up to 37% and the number of erases up to 50% with the reasonable size of log space.
키워드
Cloud Environment, Erasure Coding, IoE (Internet of Everything), Log-Structured Approach, Parity, Reliability, Solid State Drives (SSDs), Storage Systems, Write Amplification (WA)
KSP 제안 키워드
Erasure coding, I/O performance, Internet of Everything, Large-scale data, Log-structured approach, Massive Data, New approach, Parity update, Performance and Reliability, SSD array, Storage system