Ambient Relative Humidity; Airflow Considerations; Acoustic Noise - Sun Microsystems Sun Fire V210 Getting Started Manual

Ambient Relative Humidity

Ambient relative humidity levels between 45% and 50% are the most suitable for
data processing operations to:
Prevent corrosion.
■
Provide an operating time buffer in the event of environmental control system
■
failure.
Help avoid failures caused by the intermittent interference from static discharges
■
that occur when relative humidity is too low.
Electrostatic discharge (ESD) is easily generated and less easily dissipated in areas
where the relative humidity is below 35%, and becomes critical when levels drop
below 30%.

Airflow Considerations

The Sun Fire V210 and V240 servers self-cool when operated in still air.
Ensure unobstructed airflow through the chassis.
■
■
■
Inlet air enters at the front of the server and exits from the back.
■
Ventilation openings for both the inlet and exhaust of the system should provide:
■
■
■
Allow a minimum of 88.9 mm (3.5 inches) clearance at the front and rear of the
■
server when mounted, unless an unobstructed airflow can be ensured.

Acoustic Noise

TABLE 4
V240 servers.
TABLE 4
Server
Sun Fire V210 server
Sun Fire V240 server
6 Sun Fire V210 and V240 Servers Getting Started Guide • November 2005
Sun Fire V210 servers use internal fans that can achieve a total airflow of 30
cfm in normal operating conditions.
The Sun Fire V240 server uses internal fans that can achieve a total airflow of
60 cfm in normal operating conditions.
Sun Fire V210 server–a minimum open area of 85 cm
Sun Fire V240 server–a minimum open area of 170 cm
shows the amount of acoustic noise generated by the Sun Fire V210 and
Acoustic Noise
Noise Generated
Less than 7.3B sound power in ambient temperature of up to 24˚ C,
measured on a standalone system to ISO 9296 requirements
Less than 7.3B sound power in ambient temperature of up to 24˚ C,
measured on a standalone system to ISO 9296 requirements
2 2
(13 in ) each
2 2
(26 in ) each