[c-nsp] power requirement for sup720 migration

[Gert Doering]

Hi,

On Wed, Nov 15, 2006 at 12:02:16PM -0600, Jay Ford wrote:
> No, that will not work.  The sup720 needs a high-speed fan.  The high-speed
> fan needs at least a 2500 W power supply.  Therefore, you can't run a 6500
> containing a sup720 on 1300 W power supplies, even in combined
> (non-redundant) power mode.

Please don't tell that to our 7600s...

Cisco>sh power
system power redundancy mode = redundant
system power total =     1370.04 Watts (32.62 Amps @ 42V)
system power used =       773.64 Watts (18.42 Amps @ 42V)
system power available =  596.40 Watts (14.20 Amps @ 42V)
                        Power-Capacity PS-Fan Output Oper
PS   Type               Watts   A @42V Status Status State
---- ------------------ ------- ------ ------ ------ -----
1    PWR-1400-AC        1370.04 32.62  OK     OK     on 
2    PWR-1400-AC        1370.04 32.62  OK     OK     on 
                        Pwr-Allocated  Oper
Fan  Type               Watts   A @42V State
---- ------------------ ------- ------ -----
1    FAN-MOD-3HS         125.16  2.98  OK
                        Pwr-Requested  Pwr-Allocated  Admin Oper
Slot Card-Type          Watts   A @42V Watts   A @42V State State
---- ------------------ ------- ------ ------- ------ ----- -----
1    WS-SUP720-3B        282.24  6.72   282.24  6.72  on    on
2    WS-X6408A-GBIC      282.24  6.72   282.24  6.72  on    on
3    WS-X6408A-GBIC       84.00  2.00    84.00  2.00  on    on


(This is a 7603, but e.g. for the 7604, the power requirements for the
highspeed fan module is even lower, 54 Watts)

Originally, this box came with 900W PSUs.  Which is plenty, given that
the Sup720-3B only needs 300W.

So this whole thread is confusing me.  What are you doing to your modules
that a 6748 + Sup720 will need 3000W?  (PoE maybe?)

gert
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Gert Doering - Munich, Germany                             gert at greenie.muc.de
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