Copy-on-read process in disaster recovery
US9892008B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 10, 2015 |
| Grant date | Feb 13, 2018 |
| Priority date | — |
| Expiry date | Jun 28, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/2064
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Systems, methods, and computer products for copy-on-read processes in disaster recovery include: making a disaster recovery storage volume available for read access before all data from a corresponding primary storage volume has been copied to a disaster recovery storage volume; maintaining a record of regions of the disaster recovery storage volume; in response to receiving a read request for data at the disaster recovery system: looking up the record of regions of the disaster recovery storage volume to determine available data for the read request; reading any available data from the disaster recovery storage volume; obtaining data unavailable at the disaster recovery storage volume from the corresponding primary storage volume; updating the disaster recovery storage volume with the obtained data; supplying the obtained data to the read request; and updating the record of regions of the disaster recovery storage volume for the regions of the obtained data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.