Oracle Sun Server X4-4, Installation Manual

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Ventilation Guidelines
Parameter Value
in China where regulations might limit installations to a
maximum altitude of 2,000 m
Non-operating altitude (single, non-rack system) 0 m to 12,000 m (0 ft to 40,000 ft)
Acoustic noise LwAd: 8.9 B (idle and operating, room temp.), 8.9 B
(max. ambient); LpAm: 75 dBA (bystander position,
max. ambient)
Ventilation Guidelines
Rackmountable servers and equipment, including the Sun Server X4-4, typically draw cool air
in through the front of the rack and let warm air out the rear of the rack. There is no airflow
requirement for the left and right sides due to front-to-back cooling.
Air conditioning facilities usually do not precisely monitor or control temperature and humidity
throughout an entire computer room. Generally, monitoring is done at individual points
corresponding to multiple exhaust vents in the main unit, and other units in the room.
Special consideration should be paid to humidity when using underfloor ventilation. When
underfloor ventilation is used, monitoring is done at each point close to an exhaust vent.
Distribution of the temperature and humidity across the entire room is uneven.
The Sun Server X4-4 has been designed to function while installed in a natural convection
airflow. The following requirements must be followed to meet the environmental specification:
■
Ensure that there is adequate airflow through the system.
■
Ensure that air intake is at the front of the system, and the air outlet is at the rear of the
system.
■
Allow a minimum clearance of 1,232 mm (48.5 inches) at the front of the system, and 914
mm (36 inches) at the rear of the system for ventilation.
■
Ensure unobstructed airflow through the chassis. The server uses internal blowers that can
achieve a total airflow of 100 CFM in normal operating conditions.
■
Ensure that air temperature rise through the server is no greater than 68°F (20°C).
■
Ensure that inlet air enters at the front of the server and exits from the back.
■
Ensure that ventilation openings such as cabinet doors, for both the inlet and exhaust of the
server are not obstructed.
For example, Oracle's Sun Rack II has been optimized for cooling. Both the front and rear
doors have 80 percent perforations that provide a high level of airflow through the rack.
■
Ensure that front and rear clearance of the server allow a minimum of 1 inch (2.5 mm) at the
front of the server and 3.15 inch (80 mm) at the rear of the server when mounted.
Preparing to Install the Server 29