Computer system
US10628088B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 25, 2015 |
| Grant date | Apr 21, 2020 |
| Priority date | — |
| Expiry date | Jan 21, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0689
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The storage system defines, a RAID group having one or more logical devices, and manages the logical devices by assigning them to a pool. When a data write request is received from the host for the virtual volume, the storage system allocates an unused logical storage area in the pool to the virtual volume and writes the data to the storage device having the allocated logical storage area. The storage device compresses the data, stores it in the physical area, and manages the physical area in association with the logical storage region. A computer system may increase the amount of the physical area assigned to the pool when a physical usage amount of the physical area belonging to the pool exceeds a predetermined threshold value, and increase the amount of the logical storage area assigned to the pool when the logical usage amount exceeds a predetermined threshold value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.