Dell Chassis Management Controller Version 2.10 for PowerEdge FX2 and FX2s User's Guide

Fan Offset — This feature allows you to increase the airflow delivery to the PCIe card slots. An example usage of the Fan Offset is when you use high-power or custom PCIe cards that require more cooling than normal. The Fan Offset feature has options of Off, Low, Medium, and High. These settings correspond to a fan speed offset (increase) of 20%, 50%, and 100% of the maximum speed respectively. There is also minimum speed setup for each option, which is 35% for Low, 65% for Medium, and 100% for High. However, based on the configuration, the minimum speeds for the Low, Medium, and High options could be higher than these values.

Using the Medium Fan Offset setting for example, increases the speed of fans by 50% of its maximum speed. The increase is above the speed already set by the system for cooling based on the installed hardware configuration.

With any of the Fan Offset options enabled, the power consumption is increased. The system is louder with the Low offset, noticeably louder with the Medium offset, and significantly louder with the High offset. When the Fan Offset option is not enabled, the fan speeds are reduced to the default speeds required for system cooling for the installed hardware configuration.

To set the offset feature, go to Chassis Overview > Fans > Setup . On the Advanced Fan Configuration page, from the Value drop-down list corresponding to Fan Offset, select appropriately.

For more information about the Fan Offset feature, see the Online Help .

racadm fanoffset [-s <off|low|medium|high>]