[ovirt-users] General Design question for oVirt set up between locations

Hello, I'm looking to deploy oVirt for a company which has locations in different countries. As I know and also set up in my test environment, the oVirt Engine is the central place to manage different Data Center in a central place. But how to manage a location when the network connection between a Data Center and oVirt Engine is down? Is it possible to set up on each location a hosted engine and connect also the "local" engine / hosts to a "Central" Engine? What is the recommendation to deploy oVirt on multiple location? Thank you. Holger