DocumentCode :
688395
Title :
Deduplication with Block-Level Content-Aware Chunking for Solid State Drives (SSDs)
Author :
Jin-Yong Ha ; Young-Sik Lee ; Jin-Soo Kim
Author_Institution :
Coll. of Inf. & Commun. Eng., Sunkyunkwan Univ., Suwon, South Korea
fYear :
2013
fDate :
13-15 Nov. 2013
Firstpage :
1982
Lastpage :
1989
Abstract :
A critical weak point of Solid State Drives (SSDs) is the limited lifespan which stems from the characteristics of NAND flash memory. In this paper, we propose a new deduplication scheme called block-level content-aware chunking to extend the lifetime of SSDs. The proposed scheme divides the data within a fixed-size block into a set of variable-sized chunks based on its contents and avoids storing duplicate copies of the same chunk. Our evaluations on a real SSD platform show that the proposed scheme improves the average deduplication rate by 77% compared to the previous block-level fixed-size chunking scheme. Additional optimizations reduce the average memory consumption by 39% with a 1.4% gain in the average deduplication rate.
Keywords :
NAND circuits; data structures; flash memories; NAND flash memory characteristics; SSD platform; average memory consumption reduction; block-level content-aware chunking; block-level fixed-size chunking scheme; deduplication scheme; fixed-size block; solid state drives; variable-sized chunks; Ash; Electronic publishing; Information services; Internet; Kernel; Memory management; Optimization;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
High Performance Computing and Communications & 2013 IEEE International Conference on Embedded and Ubiquitous Computing (HPCC_EUC), 2013 IEEE 10th International Conference on
Conference_Location :
Zhangjiajie
Type :
conf
DOI :
10.1109/HPCC.and.EUC.2013.286
Filename :
6832169
Link To Document :
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