Deployment Guide

Table Of Contents
NOTE: For better performance, ensure that the system is connected to a stand-alone power source
with stable power supply.
Important Points to Remember for Installing a Fan
Module
The Utility panel consists of four slots numbered from 0 to 3. Insert the fan modules in slots 1 and 2.
If a fan module fails, the system continues to operate without a significant degradation in cooling
capacity for a six-hour duration.
The cooling system is designed such that, during normal operation, the fans typically run at
somewhere between 50 and 75 percent of their maximum speed at 26°C ambient temperature. This
feature results in lower noise and higher average fan life. The switch increases the fan speed to
maximum if the facility air condition fails or if a fan fails.
The fan speed increases and decreases automatically based on the internal temperature. The switch
never intentionally turns off the fans.
For proper ventilation, position the S5000 in an equipment rack (or cabinet) with a minimum of 5
inches (12.7 cm) of clearance around the exhaust vents. When you install two S5000 systems near
each other, position the two chassis at least 5 inches (12.7 cm) apart to permit proper airflow. The
acceptable ambient temperature ranges are listed in Technical Specifications.
To view the log messages, use the show logging command. For more information, refer to the
System Logs chapters of the
Dell Networking OS Command Line Reference Guide for the S5000
Switch and Dell Networking OS Configuration Guide for the S5000 Switch.
CAUTION: DO NOT mix airflow directions. The airflow directions are color coded. A red label
indicates that hot air is expelled from the PSU and a blue label indicates that hot air is expelled
from the I/O. Both fans must use the same airflow direction (I/O to Utility or Utility to I/O). The
power supplies and fans must have the same color strap. If you mismatch the airflows, the
following error message appears and the system shuts down:
00:00:53: %S5000:3 %CHMGR-2-PSU_TYPE_AIRFLOW_MISMATCH: Mismatching PSU and
FAN airflow detected. Unit 0 shall get shutdown in next 60 seconds if
mismatch not rectified.
00:00:53: %STKUNIT3-M:CP %CHMGR-1-PSU_AIRFLOW_COMBO_MISMATCH: Major alarm:
Mismatching PSU and FAN airflow detected in unit 0
The fan modules are field replaceable. Module slot 1 is on the left side of the chassis; module slot 2 is on
the right side of the chassis.
Installing a Fan Module
1. Take the fan module out of the shipping box.
2. Use the grab handle to slide the fan module into the switch fan slot, as shown below.
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