Techniques for managing parity information for data stored on a storage device
US10379949B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2017 |
| Grant date | Aug 13, 2019 |
| Priority date | — |
| Expiry date | Nov 10, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0688
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Disclosed herein are techniques for managing parity information for data stored on a storage device. According to some embodiments, the method includes the steps of (1) receiving a request to store data into the storage device, (2) writing respective portions of the data into a plurality of data pages included in a first stripe of the storage device, where each data page is stored on a respective different die of the storage device, (3) calculating primary parity information for the first stripe, (4) writing the primary parity information into a primary parity page included in a second stripe of the storage device, (5) calculating secondary parity information for the second stripe, and (6) writing the secondary parity information into a secondary parity page included in a third stripe of the storage device. Additionally, a copy of the secondary parity information can be established to further-enhance redundancy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.