If you're looking for a UPS (battery backup) to run your critical applications and services, don't just go online and make a quick purchase. Realize that UPSes come in different sizes and varieties and you'll need to choose according to your situation.

The key differentiation will be whether your equipment is using Active Power Factor Correction power supplies. If so, you will need to purchase a UPS that supports that, otherwise, when the power goes out, your system will too.
Another key factor is knowing whether your systems will be running on a generator. If you're going to be using a generator, you'll want to make sure your UPSes use Double-Conversion UPS Topology. If you use Line-Interactive UPS Topology, your UPS may run on battery the whole time that your generator is providing power. Unless you have a very brief power outage, your systems will eventually be without power and will fail.

If you need help sizing, purchasing, installing or configuring UPSes, please give us a call and we will be happy to assist.