Parity generation offload using peer-to-peer data transfers in data storage system
US10725859B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 26, 2018 |
| Grant date | Jul 28, 2020 |
| Priority date | — |
| Expiry date | Mar 26, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L67/104
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system and method improve the performance of non-volatile memory storage by offloading parity computations to facilitate high speed data transfers, including direct memory access (DMA) transfers, between a remote host and a non-volatile memory based storage system, such as a flash memory based data storage device (e.g., SSD). In conjunction with writing to non-volatile memory storage, a stripe map is used to target a selected data storage device for parity generation. All data of a stripe is transmitted to the selected data storage device to generate the parity and the generated parity is propagated from the selected data storage device to other data storage devices in the stripe. The data for the stripe may also be propagated from the selected data storage device to the other data storage devices in the stripe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.