Method for taking snapshots of data
US7363444B2 · kind B2 · utility
75Cited by
1References
37Claims
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Key dates
| Filing date | Jan 10, 2005 |
| Grant date | Apr 22, 2008 |
| Priority date | — |
| Expiry date | Nov 18, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0689
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for taking snapshots of data. In an embodiment, a first map data structure is obtained that records locations for a plurality of data blocks. A second map data structure is formed that is initially empty of locations, the second map data structure representing the snapshot after the snapshot is started. Writes on data that arrive before the snapshot starts are applied to the first map, and writes that arrive after the snapshot starts are applied to the second map.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.