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 3 k - d o c f e e d b a c k @ c i s c o . c o m
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Cisco Nexus 3000 Series Hardware Installation Guide
OL-25338-04
Chapter 1 Overview of the Cisco Nexus 3000 Series Switches
Cisco Nexus 3132Q Switch
If the chassis has two power supplies, you can hot swap one of the power supplies during operations. If
the chassis has only one power supply, you can install the new power supply in the open slot, turn on that
power supply, and then remove the original power supply during operations.
Caution
You can order replacement power supplies with front-to-back airflow or back-to-front airflow. Be sure
to order the same direction of airflow as is used with the switch. If there is a black stripe across the front
of the fan trays and power supplies, the switch is running back-to-front airflow and you must order power
supplies with back-to-front airflow. If there is no black stripe across the front of these modules, the
switch is running front-to-back airflow and you must order replacement modules with front-to-back
airflow.
Caution
The switch must run with all of its power supply and fan tray modules taking in air from a cold aisle and
exhausting air to the hot aisle. If they take in air from a hot aisle, an overtemperature condition can occur
and the switch will shut down. If the airflow directions are mixed in the same switch, you will see an
error.
Note
Never leave a power supply slot empty. If you remove a power supply, replace it with another one. If you
do not have a replacement power supply, leave the non functioning one in place until you can replace it
or fill the slot with a filler blank module (part number N2200-P-BLNK).
Fan Tray for the Cisco Nexus 3132Q Switch
The Cisco Nexus C3132Q switch supports four (3+1) redundant fans, which provide either forward or
reverse airflow for cooling. You can hot swap the fan tray during operations but must replace it within
one minute.
Both forward (port-side exhaust) and reversed (port-side intake) airflow schemes are supported. The
port-side exhaust scheme is used when the cold air flows in through the side having the fans (facing the
cold aisle) and exhausts out of the side having the ports (facing the hot aisle). Port-side intake scheme
is used when the air flows in through the ports (facing the cold aisle) and leaves through the side having
the fans (facing the hot aisle).
Table 1-13
Cisco Nexus C3132Q Power Supply Part Numbers
Power Supply Part
Number
Power Source and
Airflow Direction
Description
N2200-PAC-400W
AC
Forward
N2K/3K 400W AC Power Supply, Forward airflow
(port side exhaust)
N2200-PAC-400W-B AC
Reverse
N2K/3K 400W AC Power Supply, Reversed airflow
(port side intake)
N2200-PDC-400W
DC
Forward
N2K/3K 400W DC Power Supply, Forward airflow
(port side exhaust)
N3K-PDC-350W-B
DC
Reverse
N3K Series 350W DC Power Supply, Reversed airflow
(port side intake)
