Deduplication of volume regions
US9589008B2 · kind B2 · utility
6Cited by
29References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 4, 2013 |
| Grant date | Mar 7, 2017 |
| Priority date | — |
| Expiry date | Oct 12, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/263
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system and method for performing coarse-grained deduplication of volume regions. A storage controller detects that a first region of a first volume is identical to a second region of a second volume, wherein the first volume points to a first medium and the second volume points to a second medium. In response to detecting the identical regions, the storage controller stores an indication that the first range of the first medium underlies the second range of the second medium. Also in response to detecting the identical regions, the mappings associated with the second range of the second medium are invalidated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.