Huawei OptiX OSN 8800 Hardware Description page 84

OptiX OSN 8800/6800/3800
Hardware Description
Function
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 universal platform subrack.
Figure 4-34 Single-subrack heat dissipation and ventilation system
Front
The OptiX OSN 8800 universal platform subrack supports two fan speed modes, as shown in
Table
recommended that you set the speed mode to Auto Speed Mode.
Issue 01 (2016-03-10)
Description
independently regulated.
Provides the hot swapping feature for the fan tray assembly.
Reports alarms of the fans, and reports the in-service information.
Checks and reports on the fan status.
Side view
Air outlet
Air inlet
4-55. The partitioned speed regulating function is available in Auto Speed Mode. It is
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Figure 4-34
Fan
Air filter
4 OptiX OSN 8800 Subrack
shows the heat dissipation and
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