Storage system, storage control method, and computer system
US10025525B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 13, 2014 |
| Grant date | Jul 17, 2018 |
| Priority date | — |
| Expiry date | May 15, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/657
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The access from a host computer to a storage system is continued before and after data migration in the storage system. A first controller allocates a first logical storage area to a specific virtual storage area, stores first association information indicating the specific virtual storage area and the first logical storage area, and sends the first association information to the host computer. The first controller and the second controller perform data migration from the first logical storage area to a second logical storage area. The first controller releases the first logical storage area from the specific virtual storage area and reflects the release in the first association information. The second controller allocates the second logical storage area to the specific virtual storage area, stores second association information indicating the specific virtual storage area and the second logical storage area, and sends the second association information to the host computer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.