Efficient Hybrid Inline and Out-of-Line Deduplication for Backup Storage
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AbstractBackup storage systems often remove redundancy across backups via inline deduplication, which works by referring duplicate chunks of the latest backup to those of existing backups. However, inline deduplication degrades restore performance of the latest backup due to fragmentation, and complicates deletion of expired backups due to the sharing of data chunks. While out-of-line deduplication addresses the problems by forward-pointing existing duplicate chunks to those of the latest backup, it introduces additional I/Os of writing and removing duplicate chunks.
All Author(s) ListLi YK, Xu M, Ng CH, Lee PPC
Journal nameTransactions on Storage
Volume Number11
Issue Number1
LanguagesEnglish-United Kingdom
Keywordsbackup storage; Deduplication; Design; Experiments; Implementation; Performance
Web of Science Subject CategoriesComputer Science; Computer Science, Hardware & Architecture; Computer Science, Software Engineering

Last updated on 2020-13-08 at 04:15