Making a backup copy of data before rebuilding data on a node
US11416347B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 9, 2020 |
| Grant date | Aug 16, 2022 |
| Priority date | — |
| Expiry date | Feb 2, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/1484
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Architectures and mechanisms for rebuilding data on a node in a multimode system providing replicated data stores. A primary node provides a primary data store and a secondary node provides a replicated data store and replication to the second node occurs substantially synchronously during periods of normal operation for the second node. If the secondary node is available after a period of unavailability a copy of previously-replicated data on the secondary node is copied and stored when the secondary node is available after the period of unavailability before rebuilding of the secondary node to recover from the period of unavailability. The copy of the previously-replicated data can be used as a backup copy to the primary node during the rebuilding. The data on the secondary node is updated after the copy has been made. The updating comprises asynchronously writing data to the data on the secondary node. The secondary node synchronously replicates data from the primary node after the rebuilding.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.