Cisco Nexus 7000 Series Hardware Installation And Reference Manual page 311

Appendix A Technical Specifications
S e n d d o c u m e n t c o m m e n t s t o n e x u s 7 k - d o c f e e d b a c k @ c i s c o . c o m
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P o w e r - s u p p l y r e d u n d a n c y m o d e — A l l o w s y o u t o r e p l a c e a p o w e r s u p p l y d u r i n g s w i t c h o p e r a t i o n s .
A l l p o w e r s u p p l i e s a r e a c t i v e . T h e a v a i l a b l e p o w e r i s c a l c u l a t e d a s t h e l e a s t a m o u n t o f p o w e r
a v a i l a b l e f r o m a l l b u t o n e o f t h e p o w e r s u p p l y u n i t s ( N + 1 ) . T h e r e s e r v e p o w e r i s t h e a m o u n t o f
p o w e r o u t p u t b y t h e p o w e r s u p p l y u n i t t h a t c a n o u t p u t t h e m o s t p o w e r . F o r e x a m p l e , i f t h r e e p o w e r
s u p p l y u n i t s o u t p u t 3 k W , 6 k W , a n d 6 k W , t h e a v a i l a b l e p o w e r i s 9 k W ( 3 k W + 6 k W ) a n d t h e
r e s e r v e p o w e r i s 6 k W .
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I n p u t s o u r c e r e d u n d a n c y m o d e — T a k e s p o w e r f r o m t w o e l e c t r i c a l g r i d s s o t h a t i f o n e g r i d g o e s
d o w n , t h e o t h e r g r i d c a n p r o v i d e t h e p o w e r n e e d e d b y t h e s w i t c h . E a c h g r i d p o w e r s h a l f o f e a c h
p o w e r s u p p l y u n i t ( g r i d A i s c o n n e c t e d t o t h e I n p u t 1 r e c e p t a c l e o n e a c h p o w e r s u p p l y u n i t a n d g r i d
B i s c o n n e c t e d t o t h e I n p u t 2 r e c e p t a c l e o n e a c h p o w e r s u p p l y u n i t ) . T h e a v a i l a b l e p o w e r i s t h e
a m o u n t o f p o w e r o u t p u t b y t h e p o r t i o n s o f t h e p o w e r s u p p l y u n i t s t h a t a r e c o n n e c t e d t o t h e s a m e
g r i d . F o r e x a m p l e , i f t h r e e p o w e r s u p p l y u n i t s a r e c o n n e c t e d t o a 1 1 0 - V g r i d a n d a 2 2 0 - V g r i d , e a c h
p o w e r s u p p l y o u t p u t s 1 . 2 k W f o r t h e 1 1 0 - V g r i d a n d 3 . 0 k W f o r t h e 2 2 0 - V g r i d . T h e a v a i l a b l e p o w e r
w o u l d b e 3 . 6 k W ( 1 . 2 k W + 1 . 2 k W + 1 . 2 k W ) a n d t h e r e s e r v e p o w e r w o u l d b e 9 . 0 k W ( 3 . 0 k W +
3 . 0 k W + 3 . 0 k W ) .
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F u l l r e d u n d a n c y m o d e — P r o v i d e s b o t h p o w e r - s u p p l y r e d u n d a n c y a n d i n p u t - s o u r c e r e d u n d a n c y .
T h i s m o d e a l l o w s y o u t o r e p l a c e a p o w e r s u p p l y u n i t w i t h o u t i n t e r r u p t i n g s w i t c h o p e r a t i o n s o r
c o n t i n u e p o w e r i n g t h e s w i t c h i f o n e o f t w o g r i d s g o e s d o w n . T h e a v a i l a b l e p o w e r i s t h e l e s s e r
a m o u n t o f o u t p u t p o w e r f o r p o w e r s u p p l y r e d u n d a n c y o r i n p u t s o u r c e r e d u n d a n c y .
The amount of power available for use with your Cisco Nexus 7000 Series switch depends on the number
of power supply units, input voltage used, and the power mode used. To determine the amount of
available power for 6-kW AC power supply units, see
available for 7.5-kW AC power supply units, see
available for the 6-kW DC power supply units, see
Table A-9
Dual inputs per power supply unit
220-V and 220-V inputs
220-V and 110-V inputs
110-V and 110-V inputs
OL-23069-06
Power Availability for 6-kW AC Power Supply Units
1 power supply unit
2 power supply units
3 power supply units
1
4 power supply units
1 power supply unit
2 power supply units
3 power supply units
1
4 power supply units
1 power supply unit
2 power supply units
3 power supply units
Power Specifications for the Cisco Nexus 7000 Series Switches
Table A-9. To determine the amount of power
Table A-10. To determine the amount of power
Table A-11.
Power
Supply
Combined Redundancy
Mode Mode
6000 W —
12,000 W 6000 W
18,000 W 12,000 W
24,000 W 18,000 W
4200 W —
8400 W 4200 W
12,600 W 8400 W
16,800 W 12,600 W
2400 W —
4800 W 2400 W
7200 W 4800 W
Cisco Nexus 7000 Series Hardware Installation and Reference Guide
Input Source Full
Redundancy Redundancy
Mode Mode
3000 W —
6000 W 6000 W
9000 W 9000 W
12,000 W 12,000 W
1200 W —
2400 W 2400 W
3600 W 3600 W
4800 S 4800 W
1200 W —
2400 W 2400 W
3600 W 3600 W
A-7