HP 60-Modular-Smart-Array - Manual (Page 14)

Setup 14
When a 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, 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.
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 storage enclosure in a
well-ventilated, climate-controlled environment.
The maximum TMRA for most storage enclosure 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 storage enclosure 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 IT 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 storage enclosure from power fluctuations and temporary interruptions with a
regulating UPS. This device protects the hardware from damage caused by power surges and voltage spikes
and keeps the storage enclosure in operation during a power failure.
When installing more than one storage enclosure, you may need to use additional power distribution
devices to safely provide power to all devices. Observe the following guidelines:
• Balance the storage enclosure power load between available AC supply branch circuits.