Point-in-time copy on a remote system
US10585756B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 7, 2017 |
| Grant date | Mar 10, 2020 |
| Priority date | — |
| Expiry date | Nov 11, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/128
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A computer program product, according to one embodiment, includes a computer readable storage medium (which is not a transitory signal per se) having program instructions embodied therewith which are readable and/or executable by a processor to cause the processor to perform a method which includes: receiving data at a secondary storage volume in a secondary system from a primary storage volume in a primary system. Upon receiving a read request at the secondary system, the method includes: reading the requested data from the secondary storage volume; sending a request to the primary system for the requested data after determining that it is not in the secondary storage volume; receiving the data from the primary system; supplying the requested data; storing the data received from the primary system in the secondary storage volume; updating a secondary record; and sending a message to the primary system for updating a primary record.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.