Externally managed file versions
US7533133B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 28, 2004 |
| Grant date | May 12, 2009 |
| Priority date | — |
| Expiry date | May 10, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99954
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and system for externally managed file versions. In shared storage environments file versions may be managed utilizing sparse data objects in storage devices. A file version may comprise a chain of one or more sparse data objects, where each object may represent changes compared to the data in other objects of the chain. New, empty sparse data objects may be attached to existing object chains to create new file versions. When providing file version metadata, a metadata server may provide information for the entire object chain. Write permission may be granted only for the front-most object in a chain, while all other objects in the chain may be write-protected. A storage device may expose the presence of holes in sparse data objects to help locate information in the object chain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.