From: Brad Ellis (brad@ccbootcamp.com)
Date: Wed Apr 11 2007 - 23:57:00 ART
We're seeing a huge discrepency in our rack room HVAC calculations. We're
showing cisco's mfg listed 2811 router btu's to be 580. However, when we
actually check the power the router is using, we're getting closer to
123BTUs. Since we have over 400 of these devices, this is a HUGE difference
in the amount of cooling needed for our rack room. I've typically done HVAC
calcs in the past using the manufacture #s, but with the difference being
this big, it means the $$ difference between $15k additional cooling and
$100k additional cooling. Is this a typical discrepency with Cisco devices?
(Yes, I understand it depends on what modules are in the devices, the fan
speed of the router, etc). Just was looking for other's thoughts.
thanks,
Brad Ellis
CCIE#5796 (R&S / Security)
CCSI#30482
Network Learning Inc - A Cisco Sponsored Organization (SO)
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brad@ccbootcamp.com
www.ccbootcamp.com (Cisco Training and Advanced Technology Rental Racks)
Voice: 702-968-5100
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