Erasure coding across multiple zones
US9378084B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 25, 2013 |
| Grant date | Jun 28, 2016 |
| Priority date | — |
| Expiry date | Oct 24, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M13/373
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
In various embodiments, methods and systems for erasure coding data across multiple storage zones are provided. This may be accomplished by dividing a data chunk into a plurality of sub-fragments. Each of the plurality of sub-fragments is associated with a zone. Zones comprise buildings, data centers, and geographic regions providing a storage service. A plurality of reconstruction parities is computed. Each of the plurality of reconstruction parities computed using at least one sub-fragment from the plurality of sub-fragments. The plurality of reconstruction parities comprises at least one cross-zone parity. The at least one cross-zone parity is assigned to a parity zone. The cross-zone parity provides cross-zone reconstruction of a portion of the data chunk.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.