Storage apparatus and additional data writing method
US8627026B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 19, 2011 |
| Grant date | Jan 7, 2014 |
| Priority date | — |
| Expiry date | Dec 17, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/1453
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Deduplicated backup data of a plurality of generations are aggregated and stored.A storage apparatus is connected via a network to a host system making a content write request and includes a storage unit providing one or more containers composed of a specified storage area, and a back up unit storing the content in the container in accordance with a backup request from the host system; and wherein the backup unit cuts out the content into one or more chunks, detects a duplicate chunk, which is a duplicate of a chunk stored in the container, from the cutout chunks, and additionally writes the chunk, other than the duplicate chunk, to the container where the duplicate chunk is stored.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.