Fast and low-RAM-footprint indexing for data deduplication
US8935487B2 · kind B2 · utility
45Cited by
14References
20Claims
0Family size
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Key dates
| Filing date | Dec 28, 2010 |
| Grant date | Jan 13, 2015 |
| Priority date | — |
| Expiry date | Dec 30, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/466
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The subject disclosure is directed towards a data deduplication technology in which a hash index service's index maintains a hash index in a secondary storage device such as a hard drive, along with a compact index table and look-ahead cache in RAM that operate to reduce the I/O to access the secondary storage device during deduplication operations. Also described is a session cache for maintaining data during a deduplication session, and encoding of a read-only compact index table for efficiency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.