Fan trays and power supplies installed in an 10000 switch must have the same cooling air flow direction (port-to-
power or power-to-port). Air flow direction in an 10000 switch is not controlled by software. To change the air flow
direction, replace the power supplies and fan trays with power and fan tray units supporting the air flow direction
you require.
A minimum of five working fan trays are required for operation. The system will automatically shutdown if
overheating is detected. If fewer than six working fan trays are detected, the Global status, Rear status and
corresponding Fan tray LEDs will FLASH amber.
If one fan tray is missing for more than three minutes the system will shutdown. If two or more fan trays are
missing, the system will shutdown for five minutes and then reboot to reassess cooling capabilities.
System airflow direction (Port-to-Power or Power-to-Port) is configured automatically at system initialization and
cannot be reconfigured by the user. System airflow direction is determined by the power supply type installed in
PS1 at initialization time (or PS2 if PS1 is absent or faulted). Any Fan tray or Power supply of conflicting airflow type
will be disabled by the system. Ensure only matching Fan trays and Power supplies are used at any given runtime.
Fan trays are color-coded for Port-to-Power or Power-to-Port cooling airflow.
n
Red release latch indicates Port-to-Power airflow.
n
Blue release latch indicates Power-to-Port airflow.
Fan tray
Color code
Aruba CX 10000-48Y6C Port to Power(FB) Fan
(R8R53A)
Red
Aruba CX 10000-48Y6C Power to Port(BF) Fan
(R8R54A)
Blue
Aruba CX 10000 Distributed Services Switch | Installation and Getting Started Guide
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