Volume management and page allocation method
US8892847B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 5, 2011 |
| Grant date | Nov 18, 2014 |
| Priority date | — |
| Expiry date | Jun 14, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/1471
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The storage apparatus comprises a storage unit storing data read/written by the host apparatus, and a control unit controlling writing of the data to the storage unit. The control unit configures one or more pools from the storage unit and divides one of the pools into first pages having an area of a first size and divides the first pages into second pages having the second area, and manages the pages, manages a data storage area of a first volume storing the data by using the first-size area and manages a data storage area of a second volume storing the data by using the second-size area, assigns the first page to the data storage area of the first volume, and assigns the first page in units of the second volume and assigns the second page obtained by dividing the first page to the data storage area of the second volume.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.