HP ProLiant DL740 Server - Manual (Page 47)

Installing the Server in a Rack
CAUTION: Always use blanking panels to fill empty vertical spaces in the rack. This
arrangement ensures proper airflow. Using a rack without blanking panels results in
improper cooling that can lead to thermal damage.
Compaq branded 9000 and 10000 Series racks provide proper server cooling from
flow-through perforations in the front and rear doors that provide 64 percent open
area for ventilation.
CAUTION: If a third-party rack is used, observe the following additional
requirements to ensure adequate airflow and to prevent damage to the equipment:
• Front and rear doors—If the 42U server rack includes closing front and rear
doors, you must allow 5,350 sq cm (830 square inches) of holes evenly
distributed from top to bottom to permit adequate airflow (equivalent to the
required 64 percent open area for ventilation).
• Side—The clearance between the installed rack component and the side panels
of the rack must be a minimum of 7 cm (2.75 inches).
CAUTION: When using a Compaq branded 7000 Series rack, you must install the
high airflow rack door insert [P/N 327281-B21 (42U) or P/N 157847-B21 (22U)] to
provide proper front-to-back airflow and cooling.
2-4 HP ProLiant DL740 Server User Guide
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