Huawei OptiX OSN 8800 Hardware Description page 28

OptiX OSN 8800/6800/3800
Hardware Description
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The fan tray assembly consists of fans and fan control board.
blocks of the fan tray assembly.
Issue 01 (2016-03-10)
FAN7
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FAN10
Partition 4
If any one of the six fans in the two fan tray assemblies fails, the system can remain operational for a
short term in environments where temperatures range between 0° C to 40° C (32° F to 104° F). To
ensure long-term operation of the system, replace the fan tray assembly in a timely manner.
Short-term operation means that the continuous operating time does not exceed 96 hours and the
accumulated time per year does not exceed 15 days.
Replace the fan tray assembly in either of the following two situations:
Two or more fans fail in one of the two fan tray assemblies.
One or more fans fail in each of the two fan tray assemblies.
In a system that is operating normally, the two fans in the same section (such as FAN1 and FAN4)
run at the same speed.
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FAN8
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FAN11
Partition 5
4 OptiX OSN 8800 Subrack
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FAN9
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FAN12
Partition 6
Figure 4-9 shows the functional
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