Data storage system
US10140047B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 6, 2016 |
| Grant date | Nov 27, 2018 |
| Priority date | — |
| Expiry date | Feb 26, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/152
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The data storage system includes a memory, a hard disk, and a processing unit. A first logical address and a second logical address in a first logical block of the memory correspond to a piece of duplicated data, and the duplicated data is stored in two physical pages in the hard disk. When executing a de-duplication command, the processing unit transfers the duplicated data to a physical page mapped to a third logical address in a second logical block of the memory; the physical page has a third physical address, and the processing unit updates a first mapping relationship to make it provide a mapping relationship between the first logical address and the third logical address and a mapping relationship between the second logical address and the third logical address, and stores the mapping relationship between the third logical address and the third physical address in the memory.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.