Method and apparatus for making differential independent data copies in a data processing system
US7039659B2 · kind B2 · utility
3Cited by
2References
50Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 25, 2002 |
| Grant date | May 2, 2006 |
| Priority date | — |
| Expiry date | Nov 17, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99954
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Data is copied from a source storage device to a destination storage device in a differential mode. An extents track defines all tracks to be transferred during a first copying operation. Complementary track tables for source and destination storage devices establishing the totality of changes in data since a previous copying program to limit subsequent copying to data on changed tracks only.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.