Change block tracking for transfer of data for backups
US11573922B2 · kind B2 · utility
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3References
20Claims
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Key dates
| Filing date | Jul 20, 2018 |
| Grant date | Feb 7, 2023 |
| Priority date | — |
| Expiry date | Nov 9, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2201/84
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In one approach, a set of data blocks or files is tracked for changes between snapshots. This may be done by a file system filter running in kernel mode. The data blocks or files that are tagged as unchanged are not transferred to backup because there is no need to update since the last backup. Other data blocks and files may be first tested for change, for example by comparing digital fingerprints of the current data versus the previously backed up data, before transferring to backup.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.