Methods for data redundancy across three or more storage devices
US8225006B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 17, 2011 |
| Grant date | Jul 17, 2012 |
| Priority date | — |
| Expiry date | Jun 17, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/108
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In one embodiment of the invention, a method for data redundancy across three or more storage devices is disclosed. The method includes storing a collection of data chunks as a plurality of N-1 data stripes across N storage devices where N is three or more, wherein each data chunk of up to N data chunks forming a data stripe is stored in a different storage device; storing a parity stripe across the N storage devices including N-1 data parity chunks and one meta data parity chunk; wherein each Kth storage device of N-1 storage devices stores a Kth data parity chunk of the N-1 data parity chunks computed as parity of up to N data chunks forming the Kth data stripe; and wherein an Nth storage device of the N storage devices stores the meta parity chunk computed as parity of the N-1 data parity chunks stored in the respective N-1 storage devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.