Copy processing management system and copy processing management method
US9880765B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 7, 2014 |
| Grant date | Jan 30, 2018 |
| Priority date | — |
| Expiry date | Nov 7, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0689
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
[Object] Copy processing time is reduced by selecting an optimum copy method according to the content of difference data and the status of a system.[Solution] When the primary disk storage apparatus and the secondary disk storage apparatus are separated from each other after dual writing operation and a copy pair regarding which data is written to only the primary disk storage apparatus is to be resynchronized, the host computer selects either host-computer-based copy processing executed via the host computer or inter-disk-control-device copy processing executed between the first disk control device and the second disk control device, on the basis of information about copy processing including a difference data amount between the primary disk storage apparatus and the secondary disk storage apparatus, a data transfer amount between the respective apparatuses, and performance information of each apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.