Storage system, and apparatus and method for controlling storage
US9015434B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 15, 2012 |
| Grant date | Apr 21, 2015 |
| Priority date | — |
| Expiry date | Nov 17, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2209/5017
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A rebuild control unit splits a rebuild process into partial processes and instructs an access processing unit to execute the partial processes. In the rebuild process, data identical to data recorded in a first storage device that constitutes RLU #1 is generated based on data read from, among storage devices constituting RLU #1, storage devices other than the first storage device and written to a spare storage device included in a storage system. Each partial process includes a combination of an operation of reading data from a split range created by splitting a data readout target range into fixed-size intervals and an operation of writing data in another storage device based on the data read from the split range. In response to the instruction from the rebuild control unit to execute the multiple partial processes, the access processing unit executes the instructed partial processes in parallel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.