Rack-Aware Regenerating Codes With Multiple Erasure Tolerance

doi:10.1109/TCOMM.2022.3175826

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	Rack-Aware Regenerating Codes With Multiple Erasure Tolerance
	Zhou, Liyang 1,2; Zhang, Zhifang 1,2
	2022-07-01
发表期刊	IEEE TRANSACTIONS ON COMMUNICATIONS
ISSN	0090-6778
卷号	70 期号:7 页码:4316-4326
摘要	We study the rack-aware storage system where all storage nodes are organized in racks and within each rack the nodes can communicate freely without taxing the system bandwidth. Rack-aware regenerating codes (RRCs) were proposed for minimizing the repair bandwidth for single erasures. In the initial setting of RRCs, the repair of a single node requires the participation of all the remaining nodes in the rack containing the failed node as well as a large number of helper racks containing no failures. Consequently, the repair may be infeasible in front of multiple node failures. In this work, a relaxed repair model that can tolerate multiple node failures by simultaneously reducing the intra-rack connections and cross-rack connections is proposed. A tradeoff between the storage and repair bandwidth under the relaxed repair model is derived, and parameters of the two extreme points on the tradeoff curve are characterized for the minimum storage and minimum bandwidth respectively. Moreover, two codes corresponding to the extreme points are explicitly constructed over the fields of size comparable to the code length and with the lowest sub-packetization. Finally, for the convenience of practical use, systematic encoding processes for the two codes are also established.
关键词	Maintenance engineering Codes Bandwidth Symbols Costs Systematics Encoding Regenerating code rack-aware storage repair bandwidth
DOI	10.1109/TCOMM.2022.3175826
收录类别	SCI
语种	英语
资助项目	National Key R&D Program of China[2020YFA0712300] ; NSFC[61872353] ; CAS Project for Young Scientists in Basic Research
WOS研究方向	Engineering ; Telecommunications
WOS类目	Engineering, Electrical & Electronic ; Telecommunications
WOS记录号	WOS:000828695900006
出版者	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
引用统计
文献类型	期刊论文
条目标识符	http://ir.amss.ac.cn/handle/2S8OKBNM/61155
专题	中国科学院数学与系统科学研究院
通讯作者	Zhou, Liyang
作者单位	1.Chinese Acad Sci, Acad Math & Syst Sci, KLMM, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Math Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Liyang,Zhang, Zhifang. Rack-Aware Regenerating Codes With Multiple Erasure Tolerance[J]. IEEE TRANSACTIONS ON COMMUNICATIONS,2022,70(7):4316-4326.
APA	Zhou, Liyang,&Zhang, Zhifang.(2022).Rack-Aware Regenerating Codes With Multiple Erasure Tolerance.IEEE TRANSACTIONS ON COMMUNICATIONS,70(7),4316-4326.
MLA	Zhou, Liyang,et al."Rack-Aware Regenerating Codes With Multiple Erasure Tolerance".IEEE TRANSACTIONS ON COMMUNICATIONS 70.7(2022):4316-4326.