I have setup the Dell UPS management software in vMA 4.0 on a ESXi 4.1 (paid version) host, running 2 Windows Server VM's. It connects with a Dell Ups equipped with a network card. It runs properly and is able to shutdown automatically the ESXi host. I've set the ESXi host to start and shutdown automatically the 2 VM's. Will this shutdown initiated by the host be a "clean" Windows shutdown or will it simply pull the plug on the Windows VMs ?
Or am I supposed to also install the UPS management agent software in each Windows VM OS and have each Windows do a shutdown when it detects that the ups is on battery, and then have the ESXi host do a shutdown ?