[AusNOG] Powering a Cisco Nexus 7018

[Damien Morris]

Simon,

Thanks for the prompt response :) They're 7.5kW PSUs and after loading up the intended modules I really don't see the units dragging more than 11kW and it's more likely to hover around 2kW looking at similar reference machines in different DCs around the world internally.

Hence why I don't think running separate circuits for all those PSU inlets is the right solution (57kW per chassis? Really?), and wondering what solutions others might use or have used to distribute a lower number of feeds so you still get redundancy at feed and PSU levels and more than enough kVA available, without needing to buy a ton of idle power.

Thanks,
Damien.


On 12/04/11 3:00 PM, "Thomason, Simon" <Simon.Thomason at racq.com.au<mailto:Simon.Thomason at racq.com.au>> wrote:

Hey Damien,

What are your requirements, budget?

What kind of power feeds to you have access to?

Did you get 6kw or 7.5k psu?

Cast your eyes over this.

http://www.cisco.com/en/US/prod/collateral/switches/ps9441/ps9402/ps9512/Data_Sheet_C78-437761.html

What are you going to be putting into the chassis? I am pretty certain there is a nice power calc on the Cisco site like the 6500 which will answer a lot of your questions.


Simon Thomason
Network Engineer



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