Backup and restore strategies for data deduplication
US9823981B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 11, 2011 |
| Grant date | Nov 21, 2017 |
| Priority date | — |
| Expiry date | Nov 23, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/1453
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Techniques for backup and restore of optimized data streams are described. A chunk store includes each optimized data stream as a plurality of chunks including at least one data chunk and corresponding optimized stream metadata. The chunk store includes data chunks in a deduplicated manner. Optimized data streams stored in the chunk store are identified for backup. At least a portion of the chunk store is stored in backup storage according to an optimized backup technique, an un-optimized backup technique, an item level backup technique, or a data chunk identifier backup technique. Optimized data streams stored in the backup storage may be restored. A file reconstructor includes a callback module that generates calls to a restore application to request optimized stream metadata and any referenced data chunks from the backup storage. The file reconstructor reconstructs the data streams from the referenced data chunks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.