I am confused when attempting to figure total heat dissipation (BTU) information for telecommunications rooms / data centers, when looking at the 4500-E and 6500-E series switches. Normally Cisco documentation will provide BTU information for the power supplies, supervisor engines and line cards, in which I would normally tally up, dependent on the switch's physical configuration, and provide that information to the HVAC planner so that he could figure the cooling needs for the communications room. However, when I use Cisco's Power Calculator tool it does not provide BTU information for the power supplies themselves.
For example, I plan to use a 6506-E with dual 3000w power supplies. All slots will be occupied. In this example, I will be installing a WS-X6816-10G-2TXL, three WS-6848-SFP-2TXL, a WS-X6848-TX-2TXL and the sup is a VS-S26-10G-XL. The Cisco Power Calculator provides BTU information for each of these cards, as well as the Fan (WS-C6506-E Fan). However, no BTU information is provided for either of the 3000w power supplies.
Yet, when looking through the Catalyst 6500 Series Switch Installation Guide's "Power Supply Specifications", Table A-25 3000 W Power Supply Specifications, it shows that the power supply is generating 12,046 BTU/hour (approx.).
My question is, when figuring "Total" BTU information for cooling purposes, are the BTU numbers shown in Cisco's documentation for the 3000W power supplies to be included (added to) with Cisco's Power Calculator BTU numbers?
I ask, as Cisco's Power Calculator shows a total BTU/hour for the above configuration as being 10,586.84, but the Calculator doesn't take into consideration the power supplies, which documentation shows at 12,046 BTU/hour each. That is a humongous difference in heat dissipation...10,586.84 versus 25,148.84
I've attached the Power Calculator information and Cisco documentation on the power supplies (highlighted in yellow on page 38).
Thanks
