Power Requirements - Will One P.S. run a Catalyst 6500

[RookThis]

This coming weekend they are shutting down a PDU for emergency maintenance. I have a C-6500 switch that has one of it's power supplies on this PDU and the other on a different PDU. From looking at the current power settings, I think the switch will continue to work with just one power supply. I would appreciate some input based on the output below to determine whether I am correct in my assumption. Thanks in advance for the assistance.

C6500#sho power
system power redundancy mode = combined
system power total = 1921.92 Watts (45.76 Amps @ 42V)
system power used = 1059.66 Watts (25.23 Amps @ 42V)
system power available = 862.26 Watts (20.53 Amps @ 42V)
Power-Capacity PS-Fan Output Oper
PS Type Watts A @42V Status Status State
---- ------------------ ------- ------ ------ ------ -----
1 WS-CAC-1300W 1153.32 27.46 OK OK on
2 WS-CAC-1300W 1153.32 27.46 OK OK on
Pwr-Requested Pwr-Allocated Admin Oper
Slot Card-Type Watts A @42V Watts A @42V State State
---- ------------------ ------- ------ ------- ------ ----- -----
1 WS-X6K-S2U-MSFC2 142.38 3.39 142.38 3.39 on on
2 (Redundant Sup) - - 142.38 3.39 - -
3 WS-X6248-RJ-45 112.98 2.69 112.98 2.69 on on
4 WS-X6348-RJ-45 100.38 2.39 100.38 2.39 on on
6 WS-X6548-GE-TX 125.16 2.98 125.16 2.98 on on
7 WS-X6348-RJ-45 100.38 2.39 100.38 2.39 on on
8 WS-X6416-GE-MT 105.00 2.50 105.00 2.50 on on
9 WS-X6516-GBIC 231.00 5.50 231.00 5.50 on on
C6500#

 

[isokocons]

Yes, the 6509 will be able to run from one power supply.

 

[RookThis]

Thanks for the response, but what I was really asking based on the numbers provided, do you think this particular switch will still function with just one of the power supplies, meaning will it provide enough juice to run Sup/msfc/line cards... etc?

 

[hobbes80]

system power redundancy mode = combined

Change the power setting to redundant before you make the switch. I don't know if that will bounce the switch, but I'm willing to bet it won't, call cisco to make sure.

 

[darbyweaver]

If you come up short and it looks like you will be short, you will see one or more of your blades power down due to lack of power.

Cisco has a power calculator for determining your exact power consumption and needs.