Rate of change of data using on-the-fly accounting
US7984085B1 · kind B1 · utility
10Cited by
23References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 25, 2004 |
| Grant date | Jul 19, 2011 |
| Priority date | — |
| Expiry date | Jul 5, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/3485
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A storage system, such as a file server, creates persistent consistency point images (PCPI) or “snapshots” that are point-in-time representations of the storage system. The storage system uses persistent consistency point images to backup or mirror data. Using data already found in the data block maps associated with these PCPI, the rate of change of data between persistent consistency point images can be determined.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.