Mirrored data storage with improved data reliability
US9760293B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 29, 2013 |
| Grant date | Sep 12, 2017 |
| Priority date | — |
| Expiry date | Sep 8, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F12/0868
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A plurality of arrays of storage devices, each providing dual storage device redundancy, is provided. The plurality of arrays of storage devices includes a plurality of mirrored sets of primary storage devices, each including an even number of at least two or more primary storage devices. Each of the mirrored sets of primary storage devices stores a first and a second copy of data. The plurality of arrays of storage devices also includes a secondary storage device, which is a single physical storage device that stores a third copy of the data stored on each of the plurality of mirrored sets of primary storage devices. The secondary storage device has at least the capacity to store the data stored on the plurality of mirrored sets of primary storage devices. Dual storage device redundancy preserves data if data cannot be read from one or two physical storage devices in any array.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.