Airflow Considerations; Moving Server Chassis - Cisco UCS 5108 Installation Manual

Installation
server shutdowns when internal temperatures exceed specification. Use cable ties and other wiring practices
to keep the rear of the chassis unobstructed as shown in the "after" illustration.
Figure 21: Cable Management

Airflow Considerations

Airflow through the chassis is from front to back. Air enters the chassis through the blade servers and power
supply grills at the front of the chassis and exits through the fan modules on the back of the chassis. To ensure
proper airflow, follow these guidelines:
• Maintain ambient airflow throughout the data center to ensure normal operation.
• Consider the heat dissipation of all equipment when determining air-conditioning requirements. Do not
• When evaluating airflow requirements, take into consideration that the hot air generated by equipment
• Make sure that the exhaust at the rear of the chassis is unobstructed for at least 24 in. (61 cm). This
• Some blade servers ship with internal air baffles that are placed over the DIMMs and CPUs. They are
• If an enclosed rack is used, the front door must be 65 percent perforated to ensure adequate airflow to

Moving Server Chassis

When lifting the chassis, be aware of its weight, and follow these guidelines:
Caution Do not try to lift the chassis using the handles on the side. These handles are intended only for moving
and adjusting the chassis position.
Before
allow the exhaust of one system to be the intake for another system.
at the bottom of the rack can be drawn in the intake of the equipment above.
includes obstruction due to messy cabling practices.
used to channel airflow to where it is needed the most. The blades are designed to operate with air baffles
installed and the system will not cool correctly if they are not installed.
the servers.
After
Cisco UCS 5108 Server Chassis Installation Guide
Airflow Considerations
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