Storage system
US8707090B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 19, 2011 |
| Grant date | Apr 22, 2014 |
| Priority date | — |
| Expiry date | Sep 22, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/1076
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In a storage system which supports a redundant disk configuration, while securing fault tolerance, a longer drive access time as well as a drop in I/O throughput are prevented when a redundant data update, generated due to a data update, is mirrored in the drive.A controller for controlling data I/O to and from the drive updates first redundant data and block data of a corresponding data stripe in the disk drive in correspondence with an update of block data of the logical volume, and the controller updates second redundant data on the basis of a predetermined number of block data which belong to the same data stripe as the updated block data with different timing from the update of the block data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.