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Nexus 7000 power

Roman Rodichev
Level 7
Level 7

Can anyone shed some light on how to estimate power draw on N7K when all interfaces are up on a module? Here's an output from my n7k:

show environment power
Power Supply:
Voltage: 50 Volts
Power                              Actual        Total
Supply    Model                    Output     Capacity    Status
                                 (Watts )     (Watts )
-------  -------------------  -----------  -----------  --------------
1        N7K-AC-6.0KW               660 W       6000 W     Ok        
2        N7K-AC-6.0KW               589 W       6000 W     Ok        
3        N7K-AC-6.0KW               620 W       6000 W     Ok        


                                  Actual        Power      
Module    Model                     Draw    Allocated    Status
                                 (Watts )     (Watts )     
-------  -------------------  -----------  -----------  --------------
1        N7K-M148GT-11              N/A          400 W    Powered-Up
2        N7K-M148GT-11              N/A          400 W    Powered-Up
5        N7K-SUP1                   N/A          210 W    Powered-Up
6        N7K-SUP1                   N/A          210 W    Powered-Up
7        N7K-M148GS-11              247 W        400 W    Powered-Up
10       N7K-M108X2-12L             471 W        650 W    Powered-Up
Xb1      N7K-C7010-FAB-1            N/A           60 W    Powered-Up
Xb2      N7K-C7010-FAB-1            N/A           60 W    Powered-Up
Xb3      N7K-C7010-FAB-1            N/A           60 W    Powered-Up
Xb4      xbar                       N/A           60 W    Absent
Xb5      xbar                       N/A           60 W    Absent
fan1     N7K-C7010-FAN-S            116 W        720 W    Powered-Up
fan2     N7K-C7010-FAN-S            116 W        720 W    Powered-Up
fan3     N7K-C7010-FAN-F             11 W        120 W    Powered-Up
fan4     N7K-C7010-FAN-F             11 W        120 W    Powered-Up

N/A - Per module power not available


Power Usage Summary:
--------------------
Power Supply redundancy mode (configured)              Redundant  
Power Supply redundancy mode (operational)             Redundant 

Total Power Capacity (based on configured mode)               9000 W
Total Power of all Inputs (cumulative)                       18000 W
Total Power Output (actual draw)                              1869 W
Total Power Allocated (budget)                                4250 W
Total Power Available for additional modules                  4750 W




Side A is connected to power grid
Side B is connected to UPS

The switch is not in production yet and there are only a few interfaces connected and in up state.
If I turn off power grid, the UPS shows load increase from 40% to 80% (there are two Nexus 7000 switches on UPS)
I'm worried that UPS won't be able to handle the load when all interfaces are up and if power grid fails. 

I would like to estimate how much additional A/W will be drawn if all interfaces on
modules 1, 2, 7 and 10 are up and connected. I would like to use this information to
determine if we need to upgrade our UPS.






1 Reply 1

Lei Tian
Cisco Employee
Cisco Employee

Hi Roman,

Check power requirement chart @ http://www.cisco.com/en/US/prod/collateral/switches/ps9441/ps9402/ps9512/Data_Sheet_C78-437759.html

, or use power calculator to estimate power with fully populated modules.

HTH,

Lei Tian

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