When you install the 1500, 3400, 3410, 6400, or 6800 platform into a rack,
it is important to understand the units airflow direction so that you can ensure proper cooling. The airflow patterns for these platforms fall into two categories: 1U systems, such as the 1500, 3400, 3410, and 2U systems, such as the 6400 and 6800.
The 1500 platform employs a negative pressure fan system, which draws
cold air in from the right side of the chassis, and exhausts hot air out the left side.
The 3400 and 3410 platforms employ a positive pressure system, which
blows cold air in from the left side of the chassis and expels hot air out the left and back sides of the chassis.
illustrates the airflow pattern for 1500, 3400, and 3410 platforms. In this illustration, the airflow exiting the back of the platform is from the power supply, which in these platforms is located in the back of the unit.
illustrates the airflow pattern for 6400 and 6800 platforms.
The airflow shown exiting the front of the platform is from the power
supply, which in these platforms is located in the front of the unit.