Chunk fragmentation level: An effective indicator for read performance degradation in deduplication storage

Youngjin Nam, Guanlin Lu, Nohhyun Park, Weijun Xiao, David H.C. Du

Research output: Chapter in Book/Report/Conference proceedingConference contribution

35 Scopus citations

Abstract

Data deduplication has recently become commonplace in most secondary storage and even in some primary storage for the capacity optimization purpose. Aside from its write performance, read performance of the deduplication storage has been gaining in significance with a wide range of its deployments. In this paper, we emphasize the importance of read performance in reconstituting a data stream from its unique and shared chunks physically dispersed over deduplication storage. We newly introduce a read performance indicator called Chunk Fragmentation Level (CFL). We also validate that the CFL is very effective to indicate read performance of deduplication storage through a developed theoretical performance model and extensive experiments. Finally, we articulate further research issues.

Original languageEnglish (US)
Title of host publicationProc.- 2011 IEEE International Conference on HPCC 2011 - 2011 IEEE International Workshop on FTDCS 2011 - Workshops of the 2011 Int. Conf. on UIC 2011- Workshops of the 2011 Int. Conf. ATC 2011
Pages581-586
Number of pages6
DOIs
StatePublished - 2011
Event13th IEEE International Workshop on FTDCS 2011, the 8th International Conference on ATC 2011, the 8th International Conference on UIC 2011 and the 13th IEEE International Conference on HPCC 2011 - Banff, AB, Canada
Duration: Sep 2 2011Sep 4 2011

Publication series

NameProc.- 2011 IEEE International Conference on HPCC 2011 - 2011 IEEE International Workshop on FTDCS 2011 -Workshops of the 2011 Int. Conf. on UIC 2011- Workshops of the 2011 Int. Conf. ATC 2011

Other

Other13th IEEE International Workshop on FTDCS 2011, the 8th International Conference on ATC 2011, the 8th International Conference on UIC 2011 and the 13th IEEE International Conference on HPCC 2011
CountryCanada
CityBanff, AB
Period9/2/119/4/11

Keywords

  • deduplication
  • fragmentation
  • indicator
  • read performance
  • storage

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    Nam, Y., Lu, G., Park, N., Xiao, W., & Du, D. H. C. (2011). Chunk fragmentation level: An effective indicator for read performance degradation in deduplication storage. In Proc.- 2011 IEEE International Conference on HPCC 2011 - 2011 IEEE International Workshop on FTDCS 2011 - Workshops of the 2011 Int. Conf. on UIC 2011- Workshops of the 2011 Int. Conf. ATC 2011 (pp. 581-586). [6063043] (Proc.- 2011 IEEE International Conference on HPCC 2011 - 2011 IEEE International Workshop on FTDCS 2011 -Workshops of the 2011 Int. Conf. on UIC 2011- Workshops of the 2011 Int. Conf. ATC 2011). https://doi.org/10.1109/HPCC.2011.82