Today I (finally) convinced our boss that we need to step up migration from our current server environment into our new(er) blade servers. I've been tasked with getting UPS units to throw in the new rack, since the existing UPS units we have (2x APC Back-UPS 1500 units on an APC Redundant power switch) are slowly going out after many years of use.
We already have PDUs in the new rack setup so that's a non issue. I'm looking at needing about 1800W of power for the blade enclosure and it's power needs at max loads. It's an HP BladeSystem c3000 with 4 PSUs on N+N redundancy, so 900W ea = 1800W for the entire enclosure with failover should up to two of the PSUs fail. We also have power requirements for the remainder of the switches in the rack, routers, DSLAM, etc.
We have two circuits of 120V coming into the prem, one of which is on generator power in case of power failure, so I intend to throw each UPS on a different circuit. The generators can be considered 95% reliable in case of power failure. The problem is that all that we have to connect this power is wonderful wall outlets (NEMA 5-15R). It's not really an option for us currently to have the outlets changed.
What I'm thinking is two 2000W UPS units simply because the higher wattage units use a higher end plug type than what we have. My budget is about $750 per UPS, and I'd like to stick with two if at all possible.
Any thoughts or suggestions are most welcome!
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