HP StorageWorks 9100 - Extreme Data Storage System User Manual - Page 36
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HP enclosures 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 allow ambient room air to
enter the cabinet, and the rear door must be adequately ventilated to allow the warm air to escape
from the cabinet.
CAUTION:
To prevent improper cooling and damage to the equipment, do not block the ventilation openings.
CAUTION:
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. 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 enclosure in a
well-ventilated, climate-controlled environment.
The maximum recommended ambient operating temperature (TMRA) for most 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 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
36
Rack and environmental requirements