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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, 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,
Hitachi Advanced Server HA810 G2 User Guide
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