System and method for performing replication based on change tracking information
US8375181B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 28, 2004 |
| Grant date | Feb 12, 2013 |
| Priority date | — |
| Expiry date | Dec 24, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/178
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Data-object-level replication is performed based on storage-device-level change tracking. A method of replicating a data object (such as a file) involves accessing mapping information and change information. The mapping information identifies that one or more regions of a storage device (such as a logical volume) store portions of the data object. The change information identifies whether the regions of the storage device, which were identified by the mapping information, have been modified subsequent to a particular point in time. If the change information identifies that any of those regions of the storage device have been modified, replication of each modified one of the regions to a secondary system is initiated. Replication can be initiated from a system other than the production system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.