I am a newbie and know practically nothing about linux. I am an IBM i guy. I have four lpars of IBM i and one lpar of suse linux running on one of my power 6 boxes. Main application on the linux lpar is Tivoli Storage Manager.
On IBM i, you can control how your system reacts to your UPS going on battery power by a series of system values:
I set these system values and flipped the big arm feeding the UPS. IBM i handled this well. I didn't keep it long enough for the QUPSDLYTIM value to start shutting down the IBM i lpars. I discovered that the suse linux lpar shut itself down. How do I adjust the time in between the UPS going on battery power and before suse linux shuts itself down?
We had the UPS off for 10 minutes and it still had 55 minutes of juice left. It has a few dozen batteries.