[ovirt-users] Graceful shutdown on power loss

I'm looking into the best way to shut down our VM environment if a power outage looks like draining the UPS batteries. Is there API documentation covering this or does someone know of a article somewhere on the topic? We're currently running v3.5 engine and v3.4 hypervisors with gluster v3.4 storage. Our setup uses RHEV rather than Ovirt, in case that makes a difference. Thanks, John