Efficiently configuring multiple backup data policies with information specifying data to backup
US8762341B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 2011 |
| Grant date | Jun 24, 2014 |
| Priority date | — |
| Expiry date | Jun 11, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/1448
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system and method for determining the data that should be backed up by a plurality of backup policies are described. A global file change log that lists which files have been changed may be maintained. The global file change log may be processed to distribute the file change information into policy-specific file change logs. A global block change bitmap may also be maintained. The global block change bitmap may indicate which data blocks of the files have been changed. Performing a respective backup operation for a respective backup policy may include backing up only the data blocks that have changed in the files listed in the respective policy-specific file change log since a previous backup operation for the respective backup policy was performed. The data blocks that have changed may be specified in a respective policy-specific block change bitmap for the respective backup policy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.