chunk-fragmentation · research · also deduplication fragmentation

Chunk fragmentation

Chunk fragmentation is the dispersion of chunks needed by a deduplicated restore across storage containers or an order poorly matched to the restore sequence.

Sparsity and repeated container visits are different costs; this is not NAND erase-block fragmentation. [fu2014]

Relations

related

deduplication, container-capping, forward-assembly-area

Citations

1. Min Fu, Dan Feng, Yu Hua, Xubin He, Zuoning Chen, Wen Xia, Fangting Huang and Qing Liu. Accelerating Restore and Garbage Collection in Deduplication-based Backup Systems via Exploiting Historical Information. USENIX ATC 2014, pp. 181-192; sections 3-6. (accessed 2026-10-11)
2. Deduplication ratio does not predict restore cost (accessed 2026-10-11)

JSON: /data/terms/chunk-fragmentation.json