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Configuring the power capping policy

To configure the power capping policy, use the information in this topic.

Note
  • AMD servers do not support configuring the power capping policy function.
  • In an enclosure containing high-density server nodes, the chassis cooling and power is controlled by the SMM instead of the XClarity Controller. Refer to SMM3 web interface fore more details of solution power status.

You can choose to enable or disable the power capping function. If power capping is enabled, a selection can be made to limit the amount of power used by the server. If power capping is disabled, the maximum power used by the server is determined by the Power Redundancy policy. To change the setting, first click Reset. Choose your preferred setting; then, click Apply.

Total Power Capacity is being calculated based on power redundancy mode and number of PSUs installed in the system. The manual setting of maximum power limit can be over the actual power capacity.

When power capping is enabled, the system may be throttled in order to maintain the power limit.
Note
Even when power capping is disabled, the system may be throttled under certain fault conditions, such as power supply failure, cooling issue, etc.

Power capping can be enabled using Input measurements or Output measurements. From the drop-down menu, select the type of measurements that will be used to determine the power capping limit. When switching between measurements, the number on the slider will change accordingly.

There are two ways to change the power capping value:
  • Method 1: Move the slider mark to the desired wattage to set the overall server power limit.
  • Method 2: Input the value in the input box. The slider mark will automatically move to the corresponding position.

Click Apply after making the configuration changes. Changes will take effect immediately.