Thanks so much for the quick responses, this is all very helpful. A few additional notes:
We're in Connecticut, so humidity isn't a huge problem most of the year. Additionally, getting down below 5 F outside doesn't happen too often, so I think we're in range there. Good point about 95 F for outside temp; we're lucky that the pads for the outside units are on the ground (not the roof), so we get a little break there. I know some people run the data centers warm, but 75 is our average (it's higher on hotter days), and doesn't leave us with much cushion if the unit fails. Spot checks with an IR thermometer show server intake temp is anywhere from 74 to 85, depending on where you are in the room. Also, once we get this warm all the case fans ramp up to full speed, so we get more noise and power draw. I'll look into separate temp/humidity sensors (and leak detection; we've had a pump fail and 2 gallons of water on the floor before). We've tried a few tricks to get the airflow a little better (circulating fans, blanking panels, etc). The racks are backed up against a wall (poor-mans hot aisle, I guess). Getting the hot air back to the AC intake is not so easy, though, since the intake is right above the output. I'll ask if we can do something like Roy with a little ductwork to try and get the hot air out easier. Thank you all again; this has been helpful to hear what other people think. Jason -- Jason Healy | [email protected] | http://www.logn.net/ _______________________________________________ Discuss mailing list [email protected] https://lists.lopsa.org/cgi-bin/mailman/listinfo/discuss This list provided by the League of Professional System Administrators http://lopsa.org/
