Storage control apparatus, storage system and method
US9244849B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 20, 2011 |
| Grant date | Jan 26, 2016 |
| Priority date | — |
| Expiry date | Jul 24, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F12/0873
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A storage control apparatus includes a memory configured to store access management information concerning access from a host to each of a plurality of logical volumes, and a controller configured to refer to the access management information read from the memory, when receiving an entirety of updated data from the host, to set a write mode for data transfer from each of the plurality of logical volumes to the corresponding physical volume on the basis of the access management information to one of a difference data write mode in which difference data indicating a difference between an entirety of data stored in a storage apparatus and the entirety of updated data is written into a storage apparatus and an entire data write mode in which the entirety of updated data is written into the storage apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.