On the fly raid parity calculation
US10922172B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 24, 2019 |
| Grant date | Feb 16, 2021 |
| Priority date | — |
| Expiry date | Jul 24, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C29/52
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A data storage device comprises a storage array containing first data, a buffer containing RAID units, and a controller in communication with the storage array and the buffer. The controller is configured to receive a read request from a host device for a second data stored in the storage array, and determine an identifier associated with the requested second data. The controller is also configured to determine if the requested second data contains an unrecoverable error. The controller then accumulates first data, including a parity value, contained in the storage array associated with the same identifier as the requested second data in a reconstruction buffer, if the requested second data contains an unrecoverable error.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.