Hyper-V virtual machine synthetic full backup where user and recovery snapshots coexist
US10635636B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 23, 2014 |
| Grant date | Apr 28, 2020 |
| Priority date | — |
| Expiry date | May 18, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2201/84
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A virtual machine backup process where a plurality of types of snapshots of the virtual machine coexist includes: obtaining a list of files comprising virtual hard disks and differencing virtual hard disks associated with the virtual machine; sorting the list of files to identify relationships and to generate a current tree in which differencing virtual hard disks point to corresponding parent virtual hard disks; comparing the current tree with a previous tree associated with the virtual machine from the last backup of the virtual machine; identifying differencing virtual hard disks in the current tree that are not present in the previous tree as incremental backup data; and backing up the incremental data. The incremental data is merged with a previous synthetic full backup of the virtual machine to generate a new synthetic full backup of the virtual machine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.