...
When the user deploys, reconfigures or undeploys a virtual machine, Abiquo will include a new job called BACKUP_SCHEDULE in that task. 
- DOES THIS RUN EACH TIME OR ONLY FOR CHANGES? If the job fails because Abiquo cannot schedule the backup, then the virtual machine operation will roll back.
In Abiquo v4.0+, when the backup system is performing a backup, Abiquo locks the virtual machine.
Users CHECK: Users can only restore a backup for a deployed virtual machine. If you undeploy a VM and then deploy it again, you can restore you can restore backups for this VM.
Events from the backup system are available in Abiquo. And full details are available in the Abiquo API log.
...
There are new Abiquo API methods for working with backups. Previously, developers could create a backup integration using virtual machine metadata and events. Now developers should upgrade their integration to use the new API methods for backups, with new data media types. The Abiquo UI now works with the Abiquo API instead of virtual machine metadata. So backup information stored in virtual machine metadata is valid but it will not be visible through the Abiquo UI. For basic backward compatibility for developers upgrading an integration, it is possible to use the backup feature without a backup manager . There There are no changes to Abiquo backup events
...