Synchronous local and cross-site failover in clustered storage systems
US8904231B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 8, 2012 |
| Grant date | Dec 2, 2014 |
| Priority date | — |
| Expiry date | Jun 18, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/286
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Synchronous local and cross-site switchover and switchback operations of a node in a disaster recovery (DR) group are described. In one embodiment, during switchover, a takeover node receives a failover request and responsively identifies a first partner node in a first cluster and a second partner node in a second cluster. The first partner node and the takeover node form a first high-availability (HA) group and the second partner node and a third partner node in the second cluster form a second HA group. The first and second HA groups form the DR group and share a storage fabric. The takeover node synchronously restores client access requests associated with a failed partner node at the takeover node.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.