Huawei OptiX OSN 8800 Hardware Description page 39

OptiX OSN 8800/6800/3800
Hardware Description
Function
Partitioned heat
dissipation
Hot swapping
Alarming
Status checking
Working Principle
A fan tray assembly inside a subrack dissipates heat for the subrack to ensure that the subrack
works effectively at a specified temperature. The fan tray assembly is located on the lower
part of a subrack. It blows air into the subrack, forming an air duct from bottom to top. Other
boards in the subrack are installed vertically. In other words, the boards are parallel to the air
duct. This design ensures reliable heat dissipation.
ventilation system in the OptiX OSN 8800 T32.
Figure 4-13 Subrack heat dissipation and ventilation system
Front
Issue 01 (2016-03-10)
Side view
Air outlet
Air inlet
Air filter
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Description
Adjustable Speed Mode: You can manually adjust the fan

speed.
Each subrack is divided into three partitions to help provide
efficient heat dissipation. The fan speed in each partition is
independently regulated.
Provides the hot swapping function for the fan tray assembly.
Reports alarms of the fans, and reports the in-service
information.
Checks and reports on the fan status.
Figure 4-13
Fan
Fan
4 OptiX OSN 8800 Subrack
shows the heat dissipation and
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