What To Do During A Power Outage?

Chanc_Gorkon asks: "What do you do before and after a power outage? Does your security people call the IT people? Do your systems come back automagically? I mean yeah a PC server may not have a problem, but what if the server comes up before the backbone is available? What if there are certain things that must be done manually due to security policies or because that's the only way it can be done (our UPS has to be manually brought up after an outage as well as our S/390). Do you review how you did after the disaster or do you just say thank God something serious didn't get broken and go on with things? What do you do?" I think many places actually have backup generators for situations like this. Many other shops live and breathe by the UPS. What are your procedures for handling heavy elecrical storms, and what are the best ways to handle the occasional dissaster?