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Technical rules for system fans

Note
If an OCP 3.0 Ethernet adapter is installed, when the system is powered off but still plugged in to AC power, system fans 6 and 7 will continue to spin at a much lower speed. This is the system design to provide proper cooling for the OCP 3.0 Ethernet adapter.
Follow the following rules for system fan selection:

  • Standard fans are selected when no GPU adapter, rear drive cage, middle drive cage, or Ethernet adapter of 100 GbE or higher is installed and the processor TDP is 120 watts or 155 watts.

  • Only when standard fans are selected, can 3.5" 14TB and 12TB SAS/SATA HDD be supported.

  • Performance fans are selected when a GPU adapter, rear drive cage, middle drive cage, or Ethernet adapter of 100 GbE or higher is installed, or the processor TDP is 180 watts, 200 watts, 225 watts, 240 watts, or 280 watts.

  • Fan 1 is optional when no M.2 drive, internal PCIe adapter, middle drive cage, rear drive cage or GPU adapter is installed. However, if no fan 1 is installed, you must keep the location for fan 1 occupied by a fan filler to ensure proper airflow.