Computer system and data migration method
US9213490B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 18, 2012 |
| Grant date | Dec 15, 2015 |
| Priority date | — |
| Expiry date | Jul 19, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2201/82
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention continues host access and holds data of a migration source volume as the latest data even when a fault occurs in any of a plurality of access paths.Upon receiving a first write command from a host computer via a first access path, the migration source controller writes first update data to the migration source volume and, upon receiving a second write command from the host computer via a second access path, the migration destination controller transfers second update data to the migration source controller via a storage path and, upon receiving the second update data from the migration destination controller, the migration source controller writes the second update data to the migration source volume.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.