HP ProLiant DL288 HP Power Regulator for ProLiant servers - Page 3

Table 2. P-states of the Quad-core AMD Opteron 2356 2.3-GHz processor P-state Description Core Frequency Pmax Pmin Maximum performance Minimum power 2.3 GHz 1.15 GHz Power Regulator technology HP Power Regulator functionality is a powerful tool that uses processor P-states to control the power consumption and performance profiles of servers. Using Power Regulator, system administrators can configure a server to maximize power savings or to dynamically match processor power consumption with system load to maintain an optimal balance of performance and power utilization under all operating conditions. Processor P-states can be controlled either through the operating system or directly by the system ROM firmware (Figure 1). HP Power Regulator functionality is implemented completely in the system firmware, providing a consistent mechanism for optimizing processor power use in all servers, regardless of the operating system in use. Figure 1. Methods for controlling processor P-states OS Control Mode OS Driver System ROM Hardware Registers HP Power Regulator Dynamic and Static control modes System ROM Hardware Registers Power Regulator can be configured immediately on a single system using any of several methods, including ROM Based Setup Utility (RBSU), Integrated Lights-Out (iLO) browser, or the iLO command line. Multi-server setup is supported using the iLO scripting interface with batch processes, the Rapid Deployment Pack, or HP Insight Power Manager. Power Regulator modes System administrators can configure Power Regulator for any of four modes of operation: • HP Static High Performance mode • HP Static Low Power mode • HP Dynamic Power Savings mode • OS Control mode 3