Decreasing parity overhead in a storage system
US10810083B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 21, 2018 |
| Grant date | Oct 20, 2020 |
| Priority date | — |
| Expiry date | Dec 21, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2211/1059
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system and method for offset protection data in a RAID array. A computer system comprises client computers and data storage arrays coupled to one another via a network. A data storage array utilizes solid-state drives and Flash memory cells for data storage. A storage controller within a data storage array is configured to store user data in a first page of a first storage device of the plurality of storage devices; generate intra-device protection data corresponding to the user data, and store the intra-device protection data at a first offset within the first page. The controller is further configured to generate inter-device protection data corresponding to the first page, and store the inter-device protection data at a second offset within a second page in a second storage device of the plurality of storage devices, wherein the first offset is different from the second offset.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.