Managing data availability in storage systems
US8839028B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 23, 2011 |
| Grant date | Sep 16, 2014 |
| Priority date | — |
| Expiry date | Aug 22, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/1084
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method is used in managing data availability in storage systems. A request to write new data to a disk of a plurality of disks of a data storage system is received. The plurality of disks includes first and second parity areas. The first parity area includes first parity information and the second parity area includes second parity information. Up to two disks of the plurality of disks are having a problem. Old data of the disk is reconstructed in a memory of the data storage system. The reconstructed old data of the disk is written to a parity area. The parity area is selected from the first or second parity areas based on a configuration preference. The new data is written to the parity area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.