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CAUTION: To prevent improper cooling and damage to the equipment, do not block the ventilation openings.
When vertical space in the rack is not filled by a server or rack component, the gaps between the components cause
changes in airflow through the rack and across the servers. Cover all gaps with blanking panels to maintain proper airflow.
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.
The 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: When using a Compaq branded 7000 series rack, install the high airflow rack door insert (PN 327281-
B21 for 42U rack, PN 157847-B21 for 22U rack) to provide proper front-to-back airflow and cooling.
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 rack includes closing front and rear doors, you must allow 5,350 sq cm (830
sq in) 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 in).
Temperature requirements
To ensure continued safe and reliable equipment operation, install or position 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).
CAUTION: To reduce the risk of damage to the equipment when installing third-party options:
•
Do not permit optional equipment to impede airflow around the server or to increase the internal rack
temperature beyond the maximum allowable limits.
•
Do not exceed the manufacturer's TMRA.
Power requirements
Installation of this equipment must comply with local and regional electrical regulations governing the installation of
information technology equipment by licensed electricians. This equipment is designed to operate in installations covered
by NFPA 70, 1999 Edition (National Electric Code) and NFPA-75, 1992 (code for Protection of Electronic Computer/Data
Processing Equipment). For electrical power ratings on options, refer to the product rating label or the user
documentation supplied with that option.
WARNING: To reduce the risk of personal injury, fire, or damage to the equipment, do not overload the AC supply
branch circuit that provides power to the rack. Consult the electrical authority having jurisdiction over wiring and
installation requirements of your facility.
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Setup
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