Methods and apparatus for optimal journaling for continuous data replication
US7627612B2 · kind B2 · utility
84Cited by
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16Claims
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Key dates
| Filing date | Sep 28, 2006 |
| Grant date | Dec 1, 2009 |
| Priority date | — |
| Expiry date | Jun 20, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99953
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Methods and systems for continuous data replication, including receiving a write transaction from a production site, the write transaction including raw data (RWNEW), a size indicator (SZ1) for the size of the raw data, and a start address (ADD1) for writing the raw data, copying the raw data (RWNEW) into a first journal data stream at a current journal address (JADD1), and copying the size indicator (SZ1), the start address (ADD1) and the journal address (JADD1) into a first journal meta-data stream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.