Storage apparatus
US10592150B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 15, 2016 |
| Grant date | Mar 17, 2020 |
| Priority date | — |
| Expiry date | Mar 29, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/7207
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A storage apparatus according to an aspect of the present invention is configured to perform a deduplication process on write data from a host. For the deduplication process, the storage apparatus calculates a feature value of write data, and records, in a management region, metadata that is a set of the feature value of the write data and information on a storage position of the write data. However, to prevent the amount of metadata stored in the management region from increasing, if write data meets a predetermined condition, the storage apparatus does not perform the deduplication process, and suppresses creation of metadata of the write data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.