Volume migration using cross-appliance asymmetric namespace access group
US11226758B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 13, 2020 |
| Grant date | Jan 18, 2022 |
| Priority date | — |
| Expiry date | Apr 4, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/2064
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Migrating a source volume from a source appliance to a destination appliance, wherein the source volume is assigned to an asymmetric namespace access (ANA) group and initially exposed to a host computer as accessible at the source appliance, includes creating a destination volume on the destination appliance and expanding the ANA group to include the destination volume, with the ANA group initially exposing the destination volume as inaccessible to the host computer at the destination appliance. Subsequently, the destination volume is synchronized to the source volume and then a cutover is performed that includes (i) copying volume metadata including host reservations from the source volume to the destination volume, and (ii) changing the ANA group to expose the source volume as inaccessible at the source appliance and the destination volume as accessible at the destination appliance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.