X7-8-Install-IG100 Installation Guide
Brocade
®
X7-8 Director Hardware Installation Guide
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 57: 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
NOTE
Ensure that the captive screws securing the fan and power supply assemblies are tightened. If they are not
tightened, the air pressure inside the chassis may unseat these FRUs from chassis connectors.
Fan Assembly Numbering
The following figure illustrates the location and number identification of fan assemblies in the chassis.
X7-8-Install-IG100
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