Hierarchical codes: A flexible trade-off for erasure codes in peer-to-peer storage systems

2009 ◽  
Vol 3 (1) ◽  
pp. 52-66 ◽  
Author(s):  
Alessandro Duminuco ◽  
Ernst W. Biersack
Keyword(s):  
Storage Systems ◽  
Peer To Peer ◽  
Erasure Codes ◽  
Trade Off

AN EXPLORATION OF NON-ASYMPTOTIC LOW-DENSITY, PARITY CHECK ERASURE CODES FOR WIDE-AREA STORAGE APPLICATIONS

2007 ◽  
Vol 17 (01) ◽  
pp. 103-123 ◽  
Author(s):  
JAMES S. PLANK ◽  
MICHAEL G. THOMASON
Keyword(s):  
Storage Systems ◽  
Distributed Storage ◽  
Ldpc Codes ◽  
Peer To Peer ◽  
Erasure Codes ◽  
Low Density ◽  
Parity Check ◽  
Finite Systems ◽  
Low Density Parity Check ◽  
Distributed Storage Systems

As peer-to-peer and widely distributed storage systems proliferate, the need to perform efficient erasure coding, instead of replication, is crucial to performance and efficiency. Low-Density Parity-Check (LDPC) codes have arisen as alternatives to standard erasure codes, such as Reed-Solomon codes, trading off vastly improved decoding performance for inefficiencies in the amount of data that must be acquired to perform decoding. The scores of papers written on LDPC codes typically analyze their collective and asymptotic behavior. Unfortunately, their practical application requires the generation and analysis of individual codes for finite systems. This paper attempts to illuminate the practical considerations of LDPC codes for peer-to-peer and distributed storage systems. The three main types of LDPC codes are detailed, and a huge variety of codes are generated, then analyzed using simulation. This analysis focuses on the performance of individual codes for finite systems, and addresses several important heretofore unanswered questions about employing LDPC codes in real-world systems.

Heterogeneity-Aware Erasure Codes for Peer-to-Peer Storage Systems

2009 ◽  
Author(s):  
Lluis Pamies-Juarez ◽  
Pedro Garcia-Lopez ◽  
Marc Sanchez-Artigas
Keyword(s):  
Storage Systems ◽  
Peer To Peer ◽  
Erasure Codes

Efficient Data Maintenance Scheme for Peer-to-Peer Storage Systems

2009 ◽  
Vol 20 (1) ◽  
pp. 80-95 ◽  
Author(s):  
Zhi YANG ◽  
Jun ZHU ◽  
Ya-Fei DAI
Keyword(s):  
Storage Systems ◽  
Peer To Peer ◽  
Efficient Data ◽  
Data Maintenance
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