A Simulation Analysis of Reliability in Primary Storage Deduplication
Refereed conference paper presented and published in conference proceedings

替代計量分析
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其它資訊
摘要Deduplication has been widely used to improve storage efficiency in modern primary and secondary storage systems, yet how deduplication fundamentally affects storage system reliability remains debatable. This paper aims to analyze and compare storage system reliability with and without deduplication in primary workloads using real-world file system snapshots. Specifically, we propose a trace-driven, deduplication-aware simulation framework that analyzes data loss in both chunk and file levels due to sector errors and whole-disk failures. Compared to without deduplication, our analysis shows that deduplication consistently reduces the damage of sector errors due to intra-file redundancy elimination, but potentially increases the damages of whole-disk failures if the highly referenced chunks are not carefully placed on disk. To improve reliability, we examine a deliberate copy technique that stores and repairs first the most referenced chunks in a small dedicated physical area (e.g., 1% of the physical capacity), and demonstrate its effectiveness through our simulation framework.
著者Min Fu, Patrick P. C. Lee, Dan Feng, Zuoning Chen, Yu Xiao
會議名稱Proceedings of 2016 IEEE International Symposium on Workload Characterization (IISWC 2016)
會議開始日25.09.2016
會議完結日27.09.2016
會議地點Providence, RI
會議國家/地區美國
會議論文集題名Proceedings of 2016 IEEE International Symposium on Workload Characterization (IISWC 2016)
出版年份2016
月份9
出版社IEEE
頁次199 - 208
電子國際標準書號978-1-5090-3896-1
語言美式英語
關鍵詞Deduplication

上次更新時間 2021-24-02 於 00:52