Detecting data loss during site switchover
US9367413B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 30, 2014 |
| Grant date | Jun 14, 2016 |
| Priority date | — |
| Expiry date | Oct 10, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2201/82
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Techniques for detecting data loss during site switchover are disclosed. An example method includes storing at NVRAM of a first node a plurality of operations of a second node, the first and second nodes being disaster recovery partners. The method also includes during a switchover from the second node to the first node, receiving an indication of a first number of operations yet to be completed. The method further includes comparing the first number to a second number of operations in the plurality of operations stored at the NVRAM of the first node. The method also includes in response to the comparing, determining whether at least one operation is missing from the plurality of operations stored in the NVRAM of the first node. The method further includes in response to determining that at least one operation is missing, failing at least one volume.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.