Garbage Collection Does Not Only Collect Garbage: Piggybacking-Style Defragmentation for Deduplicated Backup Storage
Deduplication is widely used in backup storage and reduces storage overhead by allowing backups to share common data chunks. However, it naturally disrupts the sequential layout of backup images, leading to fragmentation, which slows down backup restoration. Existing solutions to this issue often come with trade-offs, either reducing deduplication effectiveness or introducing significant I/O overhead.
Authors
- Xiangyu Zou (ORCID: https://orcid.org/0000-0001-5104-8301)
- Dingbang Liu (ORCID: https://orcid.org/0009-0007-9702-6678)
- Hao Huang (ORCID: https://orcid.org/0009-0009-0826-571X)
- Wen Xia (ORCID: https://orcid.org/0000-0003-4093-6391)
- Yanqi Pan (ORCID: https://orcid.org/0009-0007-7832-0599)
- Philip Shilane (ORCID: https://orcid.org/0000-0003-1235-0502)
- Tao Lü (ORCID: https://orcid.org/0000-0003-2362-2446)
- W.X. Huang (ORCID: https://orcid.org/0009-0005-9410-3493)
Institutions
- Boston University (US)
- Harbin Institute of Technology (CN)
- DELL (United States) (US)
Publication Details
- Published
- 2025-03-26
- DOI
- https://doi.org/10.1145/3689031.3717493
- Citations
- 1
- Primary Topic
- Recycling and Waste Management Techniques
- Type
- article
- Field-Weighted Citation Impact
- 1.00