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Chapter 2 Environmental and Electrical Specifications 2-5
2.3 Airflow and Heat Dissipation
The maximum rate of heat release from fully configured midrange servers is listed in
TABLE 2-3.
Both midrange
servers have been designed to function while mounted in a natural
convection airflow. The following rules must be followed to meet the environmental
specification.
■ Ensure adequate airflow through the server.
■ The SPARC Enterprise M4000 server uses internal fans that can achieve a total
airflow of 300 cubic feet of air per minute (cfm)/8.5 cubic meter per minute in
normal operating conditions.
■ The SPARC Enterprise M5000 server uses internal fans that can achieve a total
airflow of 600 cfm/ 16.99 cubic meter per minute in normal operating
conditions.
■ The server has front-to-back cooling. The air inlet is at the front of the server. The
exhaust exits from the rear of the
server.
■ Allow a minimum clearance of 36 inches (914 mm) at the front and 914 mm
(36 inches) at the rear of the
server for adequate ventilation.
Ensure that additional equipment installed in the equipment rack does not exceed
environmental limits at the air inlet. The environmental limits assume the server is
operating in the equipment rack with ventilated doors closed.
TABLE 2-3 Heat Dissipation
Server Configuration Heat Dissipation
SPARC Enterprise M4000 2 CPU modules, 128 Gbytes memory 8018 Btu/hr
(8459 kJ/hr)
SPARC Enterprise M5000 4 CPU modules, 256 Gbytes memory 15661 Btu/hr
(16523 kJ/hr)