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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.
CAUTION: Protect the server from power fluctuations and temporary interruptions with a regulating
uninterruptible power supply. This device protects the hardware from damage caused by power surges and voltage
spikes and keeps the system in operation during a power failure.
Electrical grounding requirements
The server must be grounded properly for proper operation and safety. In the United States, you must install the
equipment in accordance with NFPA 70, 1999 Edition (National Electric Code), Article 250, as well as any local and
regional building codes. In Canada, you must install the equipment in accordance with Canadian Standards Association,
CSA C22.1, Canadian Electrical Code. In all other countries, you must install the equipment in accordance with any
regional or national electrical wiring codes, such as the International Electrotechnical Commission (IEC) Code 364, parts 1
through 7. Furthermore, you must be sure that all power distribution devices used in the installation, such as branch
wiring and receptacles, are listed or certified grounding-type devices.
Because of the high ground-leakage currents associated with multiple servers connected to the same power source,
Hewlett Packard Enterprise recommends the use of a PDU that is either permanently wired to the building's branch circuit
or includes a nondetachable cord that is wired to an industrial-style plug. NEMA locking-style plugs or those complying
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