I have a Dell Poweredge 1650 1u rack server running out in my garage 24/7. Last night, the power went out for a bit and came back on. I noticed that the server automatically came on with it. I have no UPS hooked up to it as of this moment (although I have on on the way).
What component in the server caused it to do this? This is only out of curiosity. I hope to take a Server+ class soon as I am intrigued by them.