Adaptive RAID for an SSD environment
US8775868B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 28, 2010 |
| Grant date | Jul 8, 2014 |
| Priority date | — |
| Expiry date | Sep 28, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/2053
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system and method for adaptive RAID geometries. A computer system comprises client computers and data storage arrays coupled to one another via a network. A data storage array utilizes solid-state drives and Flash memory cells for data storage. A storage controller within a data storage array is configured to determine a first RAID layout for use in storing data, and write a first RAID stripe to the device group according to the first RAID layout. In response to detecting a first condition, the controller is configured to determine a second RAID layout which is different from the first RAID layout, and write a second RAID stripe to the device group according to the second layout, whereby the device group concurrently stores data according to both the first RAID layout and the second RAID layout.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.