Pool level garbage collection and wear leveling of solid state devices
US9606915B2 · kind B2 · utility
5Cited by
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36Claims
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Key dates
| Filing date | Aug 11, 2015 |
| Grant date | Mar 28, 2017 |
| Priority date | — |
| Expiry date | Sep 14, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/7205
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The operation of a pool of solid state drives is orchestrated to manage garbage collection and wear leveling. Each individual solid state drive is operated in either an Active Mode in which I/O commands are processed or in a Maintenance Mode in which garbage collection is performed and no I/O commands are processed. The selection of solid state drives in the Active Mode is further selected to achieve wear leveling over the pool of solid state drives. A virtualization layer provides dynamic mapping of virtual volume addresses to physical solid state drives.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.