Rack-Aware Regenerating Codes With Multiple Erasure Tolerance

doi:10.1109/TCOMM.2022.3175826

	Rack-Aware Regenerating Codes With Multiple Erasure Tolerance
	Zhou, Liyang 1,2; Zhang, Zhifang 1,2
刊名	IEEE TRANSACTIONS ON COMMUNICATIONS
	2022-07-01
卷号	70 期号:7 页码:4316-4326
关键词	Maintenance engineering Codes Bandwidth Symbols Costs Systematics Encoding Regenerating code rack-aware storage repair bandwidth
ISSN号	0090-6778
DOI	10.1109/TCOMM.2022.3175826
英文摘要	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.
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
语种	英语
出版者	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
WOS记录号	WOS:000828695900006
内容类型	期刊论文
源URL	[http://ir.amss.ac.cn/handle/2S8OKBNM/61154]
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.