Online volume migration using multi-path input / output masquerading
US8806157B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 26, 2012 |
| Grant date | Aug 12, 2014 |
| Priority date | — |
| Expiry date | Jun 26, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/067
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method, including configuring data migration from a first volume to a second volume, which are coupled via a storage area network (SAN) to a host computer, with the first volume mapped to the host computer. A volume identifier associated with the first volume is copied to a memory coupled to the second volume, and the copied volume identifier is retrieved from the memory by the host computer. A state of the second volume is set to inactive, and the inactive second volume is mapped to the host computer. A state of the first volume is set to inactive, and the status is data from the inactive first volume to the inactive second volume. After the copying, data migration is started from the inactive first volume to the inactive second volume, and after the starting, the state of the second volume is set to active.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.