Methods and apparatus for point-in-time volumes
US6799258B1 · kind B1 · utility
303Cited by
8References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 10, 2002 |
| Grant date | Sep 28, 2004 |
| Priority date | — |
| Expiry date | May 29, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99955
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Methods and apparatus for point-in-time volumes are provided. A relationship is enabled between a source volume and point-in-time volume. Copying a data chunk to the point-in-time volume before a write operation modifies the data chunk on the source volume dynamically creates the point-in-time volume. The point-in-time volume can be accessed in read/write mode as a general purpose data storage volume. Other embodiments comprising additional features, such as a forced migration process, are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.