InfiniBand FDR Switch Platform Hardware User Manual
Mellanox Technologies
84
Appendix B: Thermal Threshold Definitions
There are three thermal threshold definitions for the SwitchX® switch device which
impact the overall switch system operation state: Warning, Critical and Emergency.
1. Warning – 100ºC
On managed systems only: When the SwitchX® device crosses the 100
o
C threshold, a
Warning Threshold message will be issued by the MLNX-OS management SW, indicat-
ing to system administration that the switch has crossed the Warning threshold.
Note that this temperature threshold does not require nor lead to any action by hardware
(such as switch shutdown).
2. Critical – 120ºC
When the SwitchX® device crosses this temperature, the firmware will automatically
shut down the device.
3. Emergency – 130ºC
In case the firmware fails to shut down the SwitchX® device upon crossing the Critical
threshold, the SwitchX® device will auto-shutdown upon crossing the Emergency
(130ºC) threshold.
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