Triangular asynchronous replication
US8078813B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 2004 |
| Grant date | Dec 13, 2011 |
| Priority date | — |
| Expiry date | Aug 4, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/2071
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Storing recovery data includes providing chunks of data to a remote destination, where each chunk of data represents data written before a first time and after a second time and where the second time for one of the particular chunks corresponds to a first time for a subsequent one of the particular chunks, providing synchronous data to a local destination, and providing an indicator to the local destination in connection with creation of a new chunk of data for storage at the remote destination. The local destination may maintain a plurality of maps, where each of the maps associates synchronous data being provided thereto with a specific chunk of data. In response to receiving an indicator in connection with creation of a new chunk of data, the local destination may point to a new map. There may be two maps or more than two maps.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.