Synchronization of snapshots in a distributed consistency group
US10365978B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 28, 2017 |
| Grant date | Jul 30, 2019 |
| Priority date | — |
| Expiry date | Oct 17, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2201/84
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Techniques for synchronizing snapshot operations in a distributed consistency group of storage volumes. The disclosed techniques employ a schedule of discrete snapshot operations (e.g., pausing I/O requests from host computers, taking snapshots of storage volumes, un-pausing the I/O requests), which is provided to storage appliances storing the storage volumes within the distributed consistency group. By pre-scheduling such discrete snapshot operations to be performed by the storage appliances, an amount of real-time communications (e.g., issuing snapshot commands, receiving snapshot acknowledgements) required to complete the snapshot operations is reduced, allowing data storage systems to more easily satisfy I/O time-out requirements and avoid application unresponsiveness and/or crashes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.