Sun Netra X4250 Server Site Planning
7
Note –
The combination of inlet and exhaust restrictions such as cabinet doors and
the spacing of the server from the doors can affect the cooling performance of the
server. You must evaluate these restrictions. The server placement is particularly
important for high-temperature NEBS environments where the server inlet ambient
temperature is 55˚C (131˚F). (The DC-powered server is NEBS compliant.)
■
Take care to prevent recirculation of exhaust air within a rack or cabinet.
■
Manage cables to minimize interference with the server exhaust vent.
■
Ensure that air temperature rise through the server is no greater than 68˚F (20˚C).
Acoustic Noise Emissions
The acoustic noise emissions on the server are as follows:
Declared noise emissions are in accordance with ISO 9296 standards.
Calculating Heat Dissipation
To calculate the heat generated by a server so that you can estimate the heat your
cooling system must dissipate, convert the figure for the server’s power requirement
from Watts to BTU/hr. A general formula for doing this is to multiply the power
requirement figure in Watts by 3.412.
NEBS Level 3 Certification
Telcordia certified that the DC-powered version of the server meets NEBS Level 3
requirements per SR-3580, including the appropriate sections of GR-63-CORE
(
Network Equipment-Building System Requirements: Physical Protection
) and
GR-1089-CORE (
Electromagnetic Compatibility and Electrical Safety – Generic Criteria for
Network Telecommunications Equipment
).
Parameter
Operating
Idling
Acoustic power LWAd (1B=10dB)
7.3 B
7.3 B