On 6/27/16 5:35 PM, Eric Kuhnke wrote: > Yes, very much agreed, part of the reason why I'm looking to do the > watts per linecard calculation is to illustrate how it's not healthy > except in certain places. As an edge aggregation device in a very > small city in a rural western US state where the electricity is 6 > cents/kWh, the 24x7 load from a 7604 that eats 950W with supervisors > and a 6724SFP linecard is not so terrible. In this case the colo > space for a 42U rack is sometimes literally free. > > In a IX point/datacenter/colocation environment where rack and power > costs real money, not so much.
2 x ( 4 x 10Gig) linecards is really as fast as it goes no over-subscribed. It's been rather a long time or possibly never since that platform was cutting edge on a PPS/Watt basis. Today at roughly double the power consumpution per slot you can have between 16 and 36 hundred gig ports or 48 x 10gig at half the power consumption. > > On Mon, Jun 27, 2016 at 5:26 PM, Tom Hill <t...@ninjabadger.net> > wrote: > >> On 28/06/16 00:26, Eric Kuhnke wrote: >>> Example: 7604S chassis with dual 2700W DC power - chassis and >>> fans use how much power? 2 x RSP720-3CXL at 310W each WS-X6704 >>> with DFC4 - ???W each >> >> Way too much, is the simple answer. >> >> I did have a 7604 (non-S) with the same PSUs, 1x SUP720-3BXL, 1x >> WS-X6724-SFP and 1x WS-X6708-3CXL was drawing near 2kW. >> >> It's not healthy, please consider how much you'll spend in >> electricity vs. something else. For example, the ASR9001 uses a 5th >> of the power. >> >> >> Cisco do also have a power calculator, too. It's conservative but >> not overly so: >> >> http://cpc.cloudapps.cisco.com/cpc/launch.jsp >> >> -- Tom >> >
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