We have a decent UPS in our data center, an APC system that gives us about an hour and a half of battery time. Our office is in a remote location where it's a ways for people to get to, and recently we lost power at 4AM and nobody knew it until morning, and the power was out for two hours thus all our systems took hard crashes.
I was wondering what the expectations should be for a UPS in terms of time. I know you can spend as much as you want and get what you need, but realistically, is a UPS deemed a solution long enough to get in and power things down or get in and start a generator? Are there solutions where one might decide to invest more in a very large UPS rather than a generator so as to give them say 6 hours of power?
Our needs aren't to be up 24/7 as much as to be able to have time to get in and power things down properly or maintain power though an outage of a few hours. I'm just looking for ideas and methods that people use.