Methods and apparatus for point-in-time volumes
US8417905B2 · kind B2 · utility
8Cited by
12References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 25, 2011 |
| Grant date | Apr 9, 2013 |
| Priority date | — |
| Expiry date | Aug 25, 2031 |
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.