Restoration of snapshots from cloud using differential snapshot mechanism
US11474913B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 19, 2020 |
| Grant date | Oct 18, 2022 |
| Priority date | — |
| Expiry date | Nov 20, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2201/84
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method comprises receiving a request to restore a given snapshot of a plurality of snapshots from a cloud storage platform to a storage array. In the method, a first metadata file corresponding to the given snapshot is downloaded from the cloud storage platform, and data corresponding to the given snapshot is written to the storage array. An additional metadata file corresponding to a previous snapshot of the plurality of snapshots with respect to the given snapshot is downloaded. The first metadata file and the additional metadata file are compared to determine whether one or more offsets in the additional metadata file are present in the first metadata file. Data corresponding to any of the one or more offsets determined to be absent from the first metadata file is written to the storage array, and the one or more absent offsets are added to the first metadata file.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.