Hi All, I am running about 70 servers along with disk arrays and a/c on our current ups in our computer room which lasts about 15 minutes in a power outage. This is clearly not enough time to shut down the servers if an outage lasts past that. The unit is from 1991. The question is, If you were setting up a computer room today, what vendor/model of UPS would you choose for a UPS and would you backup the backup ups with a power generator? Is it more cost effective to just have a UPS that can say for example hold power for 4 hours and hope for the best, or to get a UPS that lasts for say 2 hours along with a power generator. Suggestions of Vendor names and contacts who will work and equipment I can get in Ohio would also be a plus. Thanks Guys! Regards, Jim Kenzig http://www.kenzig.com