I have an old P4 machine that I am planning to use, for hosting my Java EE apps for demoing during interviews.
- P4 1.9GHz
- 40GB HDD
- 2GB RAM
- VIA chip-set
- 300W power supply
- Will be connected to KVM switch; no power for display needed during demo.
I need this server to run only during my interviews or whenever I demo my apps to other people. I will turn it on when I leave and turn it back off when I come back several hours later.
There are frequent power outages in my place so in the worst case, I need a UPS that can keep it running throughout the 5 or so hours of my commute + presentation.
What kind of UPS should I buy? Right now, I only have the cheap basic desktop PC UPS model It barely keeps my own PC running for 10 mins, let alone another server. Obviously I need to buy a bigger better UPS. But I don't know what to look for when I shop. Any type/spec that I should look for? What should I ask for when buying?
Do I need external batteries? I've seen some people have a dozen of those connected in a room and it seems to power a handful of computers for several hours. How many do I need to get for my requirements? What is the technical name for those big black boxy things with a couple of points where you attach power cables? where can I learn how to set them up and connect them?
What other things should I need to know about before setting up this server and its power supply?