Broadcom Brocade X7-8 User Manual

X7-8-Install-IG100 Installation Guide Brocade
®
X7-8 Director Hardware Installation Guide
4. Power Supply 4
Fan and Power Supply Airflow
All fans and power supply FRUs installed in this device must have either NPI (nonport-side intake) or NPE (nonport-
side exhaust) airflow. You must order a replacement FRU with the same part number (P/N) as the FRU being replaced
to provide the same airflow. The manufacturing P/N, located on the top of the FRU, contains either NPI or NPE. If a
mismatched power source or fan assembly is installed by mistake, a RASlog message occurs indicating that a mismatch
in fan or power supply airflow has occurred and the FRU is faulted.
NOTE
If airflow direction for a power supply assembly does not match the chassis airflow direction as stored on WWN
cards, the power supply will have a "fault" status. However, the LED operation for the power supply will not
indicate a fault. If the airflow direction for a fan assembly does not match the chassis airflow direction, the fan
LED will indicate a fault condition.
Power supply and fan assemblies are labeled with a green "E" or orange "I" airflow symbol. All fans and power supplies in
a chassis must have the same label affixed to guarantee airflow direction is consistent.
Figure 54: Airflow Labels
The orange I symbol indicates an intake FRU. This unit pulls air in from the nonport side of the device and exhausts it out
the port side. This symbol should appear on FRUs with part numbers that contain an NPI.
The green E symbol indicates an exhaust FRU. This unit pulls air in from the port side of the device and exhausts it out
the nonport side. This symbol should appear on FRUs with part numbers that contain an NPE.
Ensure that the airflow direction of power supply and fan assemblies matches. If the power supply or fan airflow direction
does not match, the FRU will fault. Faulty fans can cause an increase in temperature.
Airflow direction can be verified by entering the chassisShow command. The following output shows an example from
command output indicating mismatching airflow. WWN units should indicate "Nonport side Intake".
POWER SUPPLY Unit: 1
Power Source: AC
Fan Direction: Non-portside Intake
...
FAN Unit: 2
Fan Direction: Non-portside Intake
...
WWN Unit: 1
System AirFlow: Non-portside Exhaust
...
WWN Unit: 2
System AirFlow: Non-portside Exhaust
X7-8-Install-IG100
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Broadcom Brocade X7-8 Specifications

General

Brand	Broadcom
Model	Brocade X7-8
Category	Computer Hardware
Language	English