Storage system and data management method of journaling and storing remote copies
US9983962B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 8, 2013 |
| Grant date | May 29, 2018 |
| Priority date | — |
| Expiry date | Nov 3, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2201/855
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Fault-tolerance is improved by duplicating data and update information of that data. A storage system has a first storage apparatus that is connected to a host computer, and includes a plurality of first data volumes and a first journal volume, a second storage apparatus that is connected to the host computer and the first storage apparatus, and includes a plurality of second data volumes for storing duplicated data of each of the plurality of first data volumes, and a second journal volume for storing the duplicated data of the first journal volume, a third storage apparatus that is connected to the first storage apparatus, and includes a plurality of third data volumes that configure a remote copy pair with the plurality of first data volumes by using the journal data received from the first storage apparatus, and a fourth storage apparatus that is connected to the third storage apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.