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Going to DC is one possible way to cut it down. APC is leading the charge, if I recall correctly from the article. It's gonna be quite a while before we see server rooms with all-DC equipment...


Nearly every Proliant had an option for DC power supplies instead of AC ones. I was always surprised at how there weren't that many companies looking to order them. I think the blades did help though, as they can have two big DC power feeds run into a rack to power the whole thing, instead of having to feed multiple PDUs for a rack. The Blades all ran DC, and if a customer wanted AC, they had to buy a 3U component in the rack that would do the AC to DC conversion before sending the power up the backplane.