Huawei OptiX OSN 8800 User Manual

OptiX OSN 8800/6800/3800
Hardware Description
4 OptiX OSN 8800 Subrack
Issue 01 (2016-03-10)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
23
Figure 4-7 Subrack heat dissipation and ventilation system
Air inlet
Air outlet
Front
Side view
Air filter
Air inlet
Air outlet
Back
Fan
Fan
Air filter
Fan
Fan
The OptiX OSN 8800 supports two fan speed modes, as described in Table 4-16. The
section-dependent speed regulating function is available in Auto Speed Mode. The Auto
Speed Mode is recommended.
Table 4-16 FAN speed mode
FAN Speed
Mode
Description
Auto Speed Mode
Fan speed in each section is regulated automatically according to the
temperature of the boards in the section that the fans are targeted for.

Lower than 25°C (77°F): the fans run at low speed.

Higher than 45°C (113°F): the fans run at high speed.

25°C to 45°C (77°F to 113° F): The fans automatically adjust their
rotation speeds. This mode can reduce noise and is power-saving.
Fan speed in each section is independently regulated.
The fans run at full speed if the speed regulating signal is abnormal.
If one of the fans in one section fails, the other fans in this section run
at full speed.
When the user queries the fan speed using the NMS, the highest fan
speed among all sections is displayed. In other words, if the fans in
one section rotate at high speed, the NMS displays the fan speed as

Huawei OptiX OSN 8800 Specifications

General

Brand	Huawei
Model	OptiX OSN 8800
Category	Network Hardware
Language	English