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What should be checked if the NetShelter CX seems too loud or the noise increases unexpectedly?

Issue:
Excessive Noise from NetShelter CX.

Product Line:
NetShelter CX

Environment:
All versions and serial ranges.

Cause:
The cabinet seem louder than normal.

Resolution:
Check that doors, panels and cable exits are all secured properly.
Check that nothing is catching on the blades of the fans in the fan modules.
Check that the fans in the equipment aren’t running at full speed due to an overheating issue. (This may not cause the unit to actually exceed acceptable noise levels, but might cause an increase to the normal noise level)
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