Transparent input / output switching between synchronously mirrored storage volumes
US8762663B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 26, 2012 |
| Grant date | Jun 24, 2014 |
| Priority date | — |
| Expiry date | Jun 26, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/2076
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for configuring transparent synchronous mirroring volume switching for a first volume and a second volume that are coupled, via a storage area network, to a host computer, with the first volume mapped to the host computer, by. The method includes initiating synchronization of status data between the first volume and the second volume, and setting the first volume to an active state. The second volume is set to an inactive state, and an identifier associated with the active first volume is copied to a memory coupled to the inactive second volume. The copied identifier is retrieved from the memory by the host computer, and the inactive second volume is then mapped to the host computer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.