Seagate ST43400N/ND user manual Airflow requirements

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Airflow 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 64403601) describes how to evaluate the airflow 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 airflow in a way that creates the least amount of airflow resistance while providing airflow 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 3 shows two design approaches with one or more fans used to generateairflow. The airflow 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.

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Contents Elite Disc Drive ST43400N/ND Contents Electrostatic discharge protection PrefaceImportant safety information and precautions ST43400N/ND User’s Manual SeaFAX 408 Technical support servicesSeaFONE 408 SeaBOARDST43400N/ND disc drive General descriptionSize Dimensions Characteristics Conditions Specifications Page Drive functional block diagram Site requirements InstallationEnvironmental requirements Airflow requirements Suggested airflow Mounting orientations Space requirementsDimensions of the drive and power supply Power requirements Interface requirements Grounding requirementsScsi Unshielded single-ended I/O cabling Signal Name Pin Number Unshielded differential I/O cabling Signal Name Pin Number Unpacking Unpacking, inspection, and repackingInspection RepackingSetting the control board jumpers Installation proceduresJ4A Installing the power supply Power supply installation Installing an optional bezel Attaching a bezel Mounting the drive Mounting the drive O cable attachment Connecting the system I/O cablingTerminator attachment-single-ended I/O Terminator attachment-differential I/O Grounding the systemSynchronizing the spindle System diagram for spindle syncJ4A Installation Verification Operation Switches and indicatorsSwitches and indicators Switch or Indicator Function Operating instructions Parts data Options and accessories Part Number Description Observing maintenance precautions MaintenanceRemoving and replacing a drive Arranging for depot repairPacking a drive for shipment Removing and replacing a power supplyPage Maintenance Publication Number 83327630, Rev. a