Switching over from using a first primary storage to using a second primary storage when the first primary storage is in a mirror relationship
US10572357B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2017 |
| Grant date | Feb 25, 2020 |
| Priority date | — |
| Expiry date | Jul 13, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/2094
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A computer program product, system, and method for switching over from using a first primary storage to using a second primary storage when the first primary storage is in a mirror relationship. Migration operations are initiated to migrate data in the first primary storage to a second primary storage while the data in the first primary storage indicated in first change recording information is mirrored to a secondary storage and switch from using the first primary storage to the second primary storage. Resynchronization operations are initiated to indicate changes to data in the second primary storage in a second change recording information, copy writes from the second primary storage indicated in the first and the second change recording information to the secondary storage, and mirror writes to the second primary storage to the secondary storage in response to the copying the writes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.