Power Consumption
7.9.1
Power Consumption Configuration - Configure power consumption of the server
The Power Consumption Configuration page allows you to specify the mode the iRMC uses to control the power consumption of your PRIMERGY server.
Figure 122: Power Consumption Configuration page
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Prerequisite:
The following requirements must be met in order to configure power consumption control:
– The managed PRIMERGY server must support this feature.
– The Enhanced Speed Step or the Processor Power Management option must be enabled in the Advanced Menu of the BIOS setup.
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If you set the “Power Limit” power control mode in the Power Consumption
Options
group or in the Scheduled Power Consumption Configuration, the
Power Limit Options
group is also displayed (see page 210
).
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iRMC
Power Consumption
Power Consumption Options
The Power Consumption Options group allows you to select the power control mode and specify whether the power consumption should be monitored over time.
Power Control Mode
Mode for controlling the power consumption of the managed server:
– O/S controlled:
Power Consumption is controlled by the operating system of the managed server.
–
Minimum Power
:
The iRMC controls the server to achieve the lowest possible power consumption. In this event, performance is not always ideal.
–
Scheduled
:
The iRMC controls power consumption in accordance with a schedule (see
"Scheduled Power Consumption Configuration" on page 210
).
–
Power Limit
:
The Power Limit Options group is displayed (see "Power Limit Options" on page 212
).
Power Monitoring Units
Unit of electrical power used to display power consumption:
–
Watt
–
BTU/h
(British Thermal Unit/hour, 1 BTU/h corresponds to 0.293
Watt). iRMC S4
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Power Consumption
Enable Power Monitoring
If you enable this option, power consumption is monitored over time.
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This setting only takes effect on PRIMERGY servers that support power monitoring.
Ê Click Apply to activate your settings.
Scheduled Power Consumption Configuration
The Scheduled Power Consumption Configuration group allows you to specify in detail the schedules and modes (O/S controlled, Minimum Power, Power Limit) that the iRMC uses to control power consumption on the managed server.
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The Scheduled Power Consumption Configuration group only appears if you have enabled the power control mode scheduled in the Power Consumption
Options
group.
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Configuration for scheduled power control mode assumes that the
Enhanced Speed Step
option has been enabled in the BIOS setup. If this is not the case, a message to this effect is displayed.
If this message appears even though “Enhanced Speed Step” is enabled, this may be because:
– The CPU (e.g. low-power CPU) of the server does not support scheduled power control.
– The system is currently in the BIOS POST phase.
210
iRMC
Power Consumption
Figure 123: Power Consumption Configuration page (scheduled)
Time 1
Time [hh:ss] at which the iRMC starts power control as defined in Mode
1
on the relevant day of the week.
Time 2
Time [hh:ss] at which the iRMC starts power control as defined in Mode
2
on the relevant day of the week.
Mode 1
Power consumption mode used by the iRMC for power control as of Time
1
on the relevant day of the week.
Mode 2
Power consumption mode used by the iRMC for power control as of Time
2
on the relevant day of the week.
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Set Time 1 < Time 2, otherwise the power control mode specified under
Mode 2
will only be activated at Time 2 on the relevant day of the following week.
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Specifications in the Everyday field take priority.
iRMC S4
211
Power Consumption
Ê Click Apply to activate your settings.
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You can also configure scheduled power control using the Server
Configuration Manager (see
chapter "Configuring iRMC S4 using the
Server Configuration Manager" on page 387
).
Power Limit Options
The Power Limit Options group is displayed under the following circumstances:
– The power control mode Power Limit is selected and enabled in the Power
Consumption Options
group.
– The power control mode Scheduled is enabled in the Power Consumption
Options
group and the power control mode Power Limit is enabled at least once in the Scheduled Power Consumption Configuration group.
The power limit then applies to all periods for which this power control mode is enabled in the Scheduled Power Consumption Configuration group.
Figure 124: Power Consumption Configuration page (Power Limit Options)
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iRMC
Power Consumption
Power Limit
Maximum power consumption (in Watts).
When this is reached, the action defined in the Action Reaching Power
Limit
field is performed. When the threshold is exceeded, a warning message is written to the iRMC S4 SEL ("CPU Throttlink activated by
Power Capping").
Target for Power Regulation
The iRMC attempts to adjust the power consumption to this value which is to be specified as a percentage of the maximum power consumption specified in the Power Limit field.
Tolerance Time Before Action
Period (in minutes) the Power Limit needs to be exceeded. Not until then the action specified in the Action Reaching Power Limit field will be performed.
Action Reaching Power Limit
Action to be performed when the PowerLimit was exceeded for at least the period specified in the Tolerance Time Before Action field.
Continue
No action is performed.
Graceful Power Off (Shutdown)
Shut down the system "gracefully" and power it down.
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This option is only supported if ServerView agents are installed and signed onto the iRMC as “Connected”.
Immediate Power Off
The server is immediately powered down irrespective of the status of the operating system.
Enable dynamic Power Control
The power limit is controlled dynamically. If this option is enabled, the iRMC lowers power consumption of the server as soon as the Power Limit is exceeded. The iRMC attempts to adjust power consumption to the level specified in the Target for Power Regulation field. iRMC S4
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