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Fans
© Copyright Lenovo 2020
For cooling, the rear panel of the NE1064TO has five bays for hot-swap fan
modules. Five fan modules are required for redundancy. When five fan modules are
used, if there is a failure of one of the fans, the switch reports the condition, the
other fans continue to run, and the switch continues to operate normally. Each Fan
module has a power consumption of 33.6W.
You can replace one failed hot-swap fan module while the switch is operating. If a
second fan fails, the switch reports the condition and shuts down to prevent
overheating.
Note: On the rear side of the box, there are fault LEDs for each of the fan modules.
When the fan works abnormally, the red LED is lit. When the fan is under normal
operation, the green LED is lit.
Compatible fan options are listed in the
Fan operation and internal temperatures are monitored. If the air temperature
exceeds a desired threshold, the environmental monitor displays warnings.
Figure 13. Fan Module Rear View
Status LEDs for the fans are described in the following table.
Table 6.
Fans status LED behavior
Side Panel
State
Steady green
Rear
Steady red
Lenovo Networking
Catalog.
Functional Meaning
Fans normal operation
Fan failure
Chapter 2: Switch Components
27
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