HP ProLiant Server Power Management for Red Hat Enterprise Linux 6.x

Figure 2: Configuring the Collaborative Power Control (CPC) setting via RBSU

For more information on HP Power Regulator technology, see:

http://h20000.www2.hp.com/bc/docs/support/SupportManual/c00300430/c00300430.pdf

HP Power Capping

HP Power Capping satisfies data center power provisioning requirements by allowing the data center administrator to

provide a power budget to a single-server or a group of servers. The ProLiant platform enforces that limit by changing

the processor P-states and T-states in an operating system independent manner. HP Power Capping is independent of

the HP Power Regulator setting and can occur in any setting. When server power is being capped under OS Control

mode, the firmware overrides the power management instructions from the operating system for the duration of the

capping.

As shown in Figure 1, you can use HP iLO 4 to configure a power cap. HP iLO displays important information about

maximum available power for the power supply, the peak observed power, and the minimum observed power for the

server. With this information, you can select an appropriate power cap, either by specifying the absolute maximum

watts or a percentage of the maximum observed power of the server.

For more information on HP Power Capping, see:

http://www.hp.com/go/dpc

For an in-depth presentation on the HP Power Capping technology, see:

http://h20000.www2.hp.com/bc/docs/support/SupportManual/c01549455/c01549455.pdf