System and method for redundancy-protected aggregates
US8495417B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 9, 2009 |
| Grant date | Jul 23, 2013 |
| Priority date | — |
| Expiry date | Dec 30, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2211/1045
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention provides a system and a method for utilizing a parity protection module to back up data on striped aggregates. Specifically, the system computes parity data for data stored at a particular location of each of a plurality of constituent aggregates, and stores the parity on one of the constituent aggregates that is a parity owner for that particular location of data. In the event one of the constituent aggregates fails, new data may still be accessed by the system (the striped aggregates), both to write new data, and to read data stored on the failed aggregate. In particular, the parity protection module allows clients to read data from a failed aggregate by running a reverse parity computation, which may also be used to restore the data to the failed aggregate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.