Rob Cherry wrote: > I am working on a brand new IT room for around 4 high (12kw?) power > racks and 2 wiring racks. I was talking to the obvious choice - > Liebert - and they came back with a fairly eye watering quote that > made me question whether they are the only game in town. During my > research I fell across two companies - Rittal for cooling and Rittal's > rebadge of Eaton technologies Powerware line of UPSes.
When I last did this, I used Rittal racks, but a Liebert Data-Pad, which is (was) a raised floor made of 2-by-4 modules a foot deep, including a couple of fan-coil units inside the floor. The floor was a pressurized plenum, and the racks (Rittal NEMA-12 dust-tight, though hardly necessary) had open bottoms over cut tiles, and fans sucking air out the top. Each rack was a separate, balanced-draft flue, in fact. 3-ton Liebert process chiller on the roof; nice, big, professionally-installed copper pipe down the corner. And it wasn't cheap. But the room was so small, nothing else would fit. Before: Some servers were too hot to touch, no exaggeration. After: Cold as corpses. Given that racks are designed more for front-to-back airflow these days, you'd have to have them pretty deep to play this game, a bit more than 30 inches I'd guess. And of course not with mesh doors. But damn, it worked well. _______________________________________________ Discuss mailing list [email protected] http://lopsa.org/cgi-bin/mailman/listinfo/discuss This list provided by the League of Professional System Administrators http://lopsa.org/
