Volume migration in a federated storage array with non-volatile memory express over fabric (NVMeoF) host attachment
US11061599B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 29, 2019 |
| Grant date | Jul 13, 2021 |
| Priority date | — |
| Expiry date | Sep 19, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/1668
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An aspect of volume migration includes establishing a connection between hosts and a non-volatile memory over fabric (NVMeoF) controller for appliances, and creating and exposing a volume as a namespace to hosts. The namespace forms part of an asymmetric namespace access (ANA) group in which optimized paths are exposed to the hosts. Upon receiving a request to migrate the volume from a source appliance to a destination appliance, an aspect further includes creating a namespace on the destination, and configuring the ANA group of the namespace as inaccessible. Through the connection, an aspect includes initiating an asynchronous event notification (AEN) to the host to connect ports on the destination and, upon connecting to the ports, discovering by the hosts on the destination, the namespace created, verifying the hosts have connected to the ports and have discovered the namespace, and migrating data to the destination and performing input/output cutover.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.