Spanned RAID with nested parity
US10521318B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 16, 2017 |
| Grant date | Dec 31, 2019 |
| Priority date | — |
| Expiry date | Feb 13, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2201/82
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In accordance with embodiments of the present disclosure, a method may be implemented to respond to receiving data A to be stored in a storage system that includes a plurality of N spans, each including a plurality of M drives. The method may include performing data storing operations. The data storing operations may include storing the data A in N portions across the plurality of spans, generating a Za parity based on an XOR operation applied to the N portions of the data A, storing the Za parity in N−1 portions across a subset of the plurality of spans, determining a Zap parity based on an XOR operation applied to the N−1 portions of the Za parity, and storing the Zap parity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.