Using mirror indicators to determine whether to mirror tracks in a data set in a primary volume mirrored to a secondary volume
US9753662B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 2016 |
| Grant date | Sep 5, 2017 |
| Priority date | — |
| Expiry date | Sep 26, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/312
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Provided are a computer program product, system, and method for using mirror indicators to determine whether to mirror tracks in a data set in a primary volume mirrored to a secondary volume. A table is read. The table is maintained by a primary controller managing the primary volume that includes a mirror indicator for each of a plurality of tracks in at least one data set configured in the primary volume indicating whether a track is to be mirrored to the secondary volume. Record sets are read from a cache of the primary controller for the tracks in primary volume having the mirror indicators in the table indicating that the track is to be mirrored. The write data in the read record sets is applied to tracks in the secondary volume mirroring the tracks in the primary volume.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.