Temperature Requirements - HP BL20p - ProLiant - G2 Setup And Installation Manual

ProLiant servers draw in cool air through the front door and expel warm air through
the rear door. Therefore, the front and rear rack doors must be adequately ventilated
to enable ambient room air to enter the cabinet, and the rear door must be adequately
ventilated to enable the warm air to escape from the cabinet.
IMPORTANT: Do not block the ventilation openings.
When any vertical space in the rack is not filled by servers or rack components, the
gaps between the components cause changes in airflow through the rack and across
the servers. Cover all gaps with server blanks to maintain proper airflow.
Compaq branded 9000 Series racks provide proper server cooling from flow-through
perforations in the front and rear doors that provide 65 percent open area for
ventilation.
CAUTION: When using a Compaq branded 7000 Series rack, you must install the
high airflow rack door insert [P/N 327281-B21 (42U)] to provide proper front-to-back
airflow and cooling.
CAUTION: Always use server blanks to fill empty vertical spaces in the rack. This
arrangement ensures proper airflow. Using a rack without server blanks results in
improper cooling that can lead to thermal damage.

Temperature Requirements

To ensure continued safe and reliable equipment operation, install or locate the
system in a well-ventilated, climate-controlled environment.
The maximum recommended ambient operating temperature (TMRA) for most
server products is 35°C (95°F). The temperature in the room where the rack is
located must not exceed 35°C (95°F).
HP ProLiant BL p-Class System Setup and Installation Guide
Planning the Installation
2-3