Information processing system, storage apparatus and storage device
US10102070B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 1, 2015 |
| Grant date | Oct 16, 2018 |
| Priority date | — |
| Expiry date | Jun 1, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F12/0804
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A purpose is to speed up a write process with a parity update. An information processing system includes storage devices constituting a RAID group, coupled to one bus and communicating with each other. Each of the storage devices includes a device controller and a storage medium for storing data. The storage devices include a first storage device storing old data and a second storage device storing old parity associated with the old data. A first device controller of the first storage device creates intermediate parity based on the old data and new data for updating the old data and transmit the intermediate parity to the second storage device specifying the second storage device storing the old parity associated with the old data, and a second device controller of the second storage device creates new parity based on the intermediate parity and the old parity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.