Rabbet: Using Layout-Aware Backup for RAID Reconstruction

doi:10.1049/cje.2017.04.009

	Rabbet: Using Layout-Aware Backup for RAID Reconstruction
	Zhu Xudong 1,2; Xu Wei 2; Mao Yuxin 1; Zhu Ping 1
	2017-07-01
发表期刊	CHINESE JOURNAL OF ELECTRONICS
ISSN	1022-4653
卷号	26 期号:4 页码:710-719
摘要	Once a disk of storage system is failed, RAID mechanism will reconstruct to keep the reliability. The reconstruction leads to a sharp deterioration in I/O performance of RAID, and the storage system cannot provide high performance service for the applications. The Multi-TB disk capacity and high load of the application make the reconstruction last for a very long time. This paper proposes Rabbet, a method accelerating RAID reconstruction using data of backup. Rabbet includes a new RAID reconstruction frame, a RAID layout-aware mapping mechanism for backup, and a reconstruction algorithm. The result of experiments shows that, comparing to the classic DOR methods Rabbet shortens the RAID5 reconstruction process to 13.9%-42.8% and decreases the average response time for applications during reconstruction by 3.2%-14.6%. Rabbet also improves the reliability of storage systems.
关键词	RAID reconstruction Backup Layout aware
DOI	10.1049/cje.2017.04.009
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[61100057] ; National Natural Science Foundation of China[61305148] ; Provincial Science and Technology Project of Zhejiang[2014C33097] ; Provincial Science and Technology Project of Zhejiang[2014C33099] ; Provincial Natural Science Fund of Zhejiang[LY14F020003]
WOS研究方向	Engineering
WOS类目	Engineering, Electrical & Electronic
WOS记录号	WOS:000405159400007
出版者	TECHNOLOGY EXCHANGE LIMITED HONG KONG
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.204/handle/2XEOYT63/7047
专题	中国科学院计算技术研究所期刊论文_英文
通讯作者	Zhu Xudong
作者单位	1.Zhejiang Gongshang Univ, Hangzhou 310018, Zhejiang, Peoples R China 2.Chinese Acad Sci, Inst Comp Technol, Beijing 100080, Peoples R China
推荐引用方式 GB/T 7714	Zhu Xudong,Xu Wei,Mao Yuxin,et al. Rabbet: Using Layout-Aware Backup for RAID Reconstruction[J]. CHINESE JOURNAL OF ELECTRONICS,2017,26(4):710-719.
APA	Zhu Xudong,Xu Wei,Mao Yuxin,&Zhu Ping.(2017).Rabbet: Using Layout-Aware Backup for RAID Reconstruction.CHINESE JOURNAL OF ELECTRONICS,26(4),710-719.
MLA	Zhu Xudong,et al."Rabbet: Using Layout-Aware Backup for RAID Reconstruction".CHINESE JOURNAL OF ELECTRONICS 26.4(2017):710-719.