Select Monitors → Power Management to view the power information, based on projected power consumption, for each power domain and to configure power management for the BladeCenter unit.
There are two power domains in most BladeCenter units.
Click Power Domain 1 details or Power Domain 2 details for the list of BladeCenter components in each power domain (see Detailed power information for information). The power-management policy settings determine how the BladeCenter unit reacts in each power domain to a power-source failure or power-module failure. The combination of the BladeCenter configuration, power-management policy settings, and available power might cause blade servers to reduce their power level (throttle) or not turn on.
The following power status information is displayed in the BladeCenter Power Domain Summary, the BladeCenter Power Domain Planning, and the BladeCenter Chassis Power Summary sections:
- Status: This field contains a color-coded icon that indicates status of the power domains and a short status description that lists any outstanding issues that are related to power consumption or redundancy in each power domain.
- Power Modules: This field lists the power modules in each power domain and their rated capacity, in watts.
- Power-Management Policy: This field displays the power-management policy that is set for each power domain, defining how the power domain will react to conditions that might result in a loss of redundancy. This setting is configured on the Blade Tasks → Configuration page (see Configuration for information).
- Maximum Power Limit: This field displays the amount of power that is available in each power domain, in watts. Total power is calculated by the advanced management module according to the rated capacities of the power modules that are installed in a power domain and the power-management policy that has been set for the power domain.
- Power in Use: This field displays the current power that is being used in each power domain, in watts. Usually, a module consumes less power than the maximum allocated power. For this reason, the total power that is actually consumed by the chassis might be less than the amount that is shown in this field.
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Allocated Power (Max): This field displays the total amount
of power, in watts, that is reserved for use by the components that
are installed in a power domain. This value might include power for
components that are not currently installed in the BladeCenter unit,
such as the I/O modules. Power is reserved for these components because
the management module preallocates power for some components that
are normally required for BladeCenter unit operation. The reserved-power
total might also include power for components that are installed in
the BladeCenter unit, are in a standby state, and are not turned on.
These components are included in the total so that the amount of spare
(unallocated) power in the power domain can be accurately calculated. Note: The maximum allocated power for modules is the worst-case amount that the module might consume. The power-in-use number for some modules, including I/O modules, the midplane, and the management module, is the maximum allocated power when the module is powered-on. Usually, a module consumes less power than the maximum allocated power. Therefore, the total power that is actually consumed by the chassis might be less than the amount that is shown in the Power in Use field.
- Remaining Power: This field displays the amount of unallocated (spare) power in a power domain, in watts. This value is used by the management module when it determines whether a newly installed module should turn on. The remaining power value is calculated according to the total power and the amount of reserved power for each power domain.
- Total DC Power Available: This field displays the total amount of dc power that is available for the entire BladeCenter unit. It is the sum of the two power domain ratings.
- Total AC Power In Use: This field displays the total ac power that is being consumed by all modules in the BladeCenter unit. For BladeCenter H units, it also includes the power that is consumed by the blowers.
- Total Thermal Output: This field displays the thermal output (load) of the BladeCenter unit, in Btu per hour. The value is calculated according to the total ac power that is in use.
On this page, you also can configure over-temperature response for the BladeCenter unit, set the power data sampling interval, and view a graph of BladeCenter unit power consumption. You can also enable or disable NEBS operating mode for BladeCenter T and BladeCenter HT units.
The BladeCenter Chassis Configuration Setting section configures how the management module responds if it detects an over-temperature condition (thermal event) on a blade server. The following acoustic mode options are supported in response to thermal events:
- Network Equipment-Building System (NEBS) mode check box (BladeCenter T and BladeCenter HT units only): Use this checkbox to enable or disable NEBS mode (see NEBS mode support for additional information).
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Acoustic mode:
- Disabled (default): Increase the blower speeds, as needed, to provide additional cooling.
-
Enabled: Reduce blade server power consumption (throttle
blade servers) to stay within acoustic noise limits. This option affects
only those BladeCenter components that support power throttling.Note: To enable acoustic mode for BladeCenter T and BladeCenter HT units, you must disable NEBS mode.
- Data Sampling Interval: Determines how often that power information is gathered for trending purposes.
Click the links at the bottom of the page to display thermal trending information for individual BladeCenter components. The components that are monitored and listed vary according to BladeCenter unit type.
The following illustration shows the media tray temperature information, as an example.
