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10 ST43401N/ND, ST43402ND User’s Manual, Rev. B
Air-flow requirements
The enclosure design must ensure adequate cooling for the drive. Note that
the fan in the power supply cools only the power supply’s internal parts.
The drive’s product specification (document 64403603) describes how to
evaluate the air-flow design. The evaluation consists of ensuring that the case
temperatures of certain critical components remain within acceptable limits
during drive operation.
We recommend orienting the drive or directing the air flow in a way that
creates the least amount of air-flow resistance while providing air flow
above the circuit boards and around the head and disc assembly (HDA).
Also, choose the shortest possible path between the air inlet and exit. This
minimizes the distance traveled by air that is heated by the drive and by
other nearby heat sources.
Figure 4 shows two design approaches with one or more fans used to
generate airflow. The air-flow patterns can be created by the fans either
pushing or drawing air. The overall flow pattern can be directed from front to
back, back to front, or side to side.