Storage system having plurality of flash packages
US8484414B2 · kind B2 · utility
177Cited by
2References
3Claims
0Family size
Assignee
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Key dates
| Filing date | Aug 31, 2009 |
| Grant date | Jul 9, 2013 |
| Priority date | — |
| Expiry date | Dec 5, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2211/1035
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The storage system comprises a plurality of flash packages configuring one or more RAID groups, and a controller coupled to the plurality of flash packages. Each flash package comprises a plurality of flash chips configured from a plurality of physical blocks. The controller identifies a target area related to an unnecessary area, unmaps a physical block allocated to a logical block belonging to this target area from this logical block, and manages the unmapped physical block as a free block.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.