Many thanks.
I'm made nervous by the fact that APC seem to say their 'Deluxe' software version is needed to close applications like exchange and SQL Server.
I guess I have to give it a try sometime!
De APC software is indeed capable of shutting down SQL services..
But it only shuts down the services (Not the whole server), By shuttting down these services ons heavy loaded machines, disk usage etc goes down, and the APC can hold up the server longer...
Then on low batt of the ups it shuts down the whole server. (just like you shut it down in Windows OS) and thus first shutting down al services and then shutting down Windows OS