HP ML150 HP ProLiant ML100 Series Server User Guide - Page 10

Space and airflow requirements, Tower server, Rack server

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Space and airflow requirements Tower server In a tower configuration, leave at least a 7.6-cm (3.0-in) clearance space at the front and back of the server for proper ventilation. Rack server To allow for servicing and adequate airflow, observe the following space and airflow requirements when deciding where to install a rack: • Leave a minimum clearance of 63.5 cm (25 in) in front of the rack. • Leave a minimum clearance of 76.2 cm (30 in) behind the rack. • Leave a minimum clearance of 121.9 cm (48 in) from the back of the rack to the back of another rack or row of racks. • Leave a minimum clearance of 4.4 cm (1.75 in) from the top of the side panel. HP servers 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. 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, 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). Setup 10

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Setup 10
Space and airflow requirements
Tower server
In a tower configuration, leave at least a 7.6-cm (3.0-in) clearance space at the front and back of the
server for proper ventilation.
Rack server
To allow for servicing and adequate airflow, observe the following space and airflow requirements when
deciding where to install a rack:
•
Leave a minimum clearance of 63.5 cm (25 in) in front of the rack.
•
Leave a minimum clearance of 76.2 cm (30 in) behind the rack.
•
Leave a minimum clearance of 121.9 cm (48 in) from the back of the rack to the back of another
rack or row of racks.
•
Leave a minimum clearance of 4.4 cm (1.75 in) from the top of the side panel.
HP servers 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.
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, 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).