Applying deduplication digests to avoid same-data writes
US11216199B2 · kind B2 · utility
2Cited by
8References
23Claims
0Family size
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Key dates
| Filing date | Oct 31, 2018 |
| Grant date | Jan 4, 2022 |
| Priority date | — |
| Expiry date | Jan 1, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/907
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A technique for managing write requests in a data storage system checks whether newly-arriving data match previously-stored data that have been recorded in a deduplication database. If a match is found, the technique compares mapping metadata for the newly-arriving data with mapping metadata for the matching data. If both sets of metadata point to the same storage location, then the newly-arriving data is a same-data write and a new write to disk is avoided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.