HP AB500A - Integrated Lights-Out Advanced Technology Brief
  1. Manuals
  2. Brands
  3. HP Manuals
  4. Server
  5. AB500A - Integrated Lights-Out Advanced
  6. Technology brief
HP AB500A - Integrated Lights-Out Advanced Technology Brief

HP AB500A - Integrated Lights-Out Advanced Technology Brief

Hp power regulator for proliant servers
Hide thumbs Also See for AB500A - Integrated Lights-Out Advanced:
Table of Contents

Advertisement

Quick Links

See also: User Manual , Technology Brief
Power Regulator for ProLiant servers
technology brief, 4th edition
Abstract.............................................................................................................................................. 2
Introduction......................................................................................................................................... 2
Processor P-states................................................................................................................................. 2
Power Regulator technology.................................................................................................................. 3
Power Regulator modes .................................................................................................................... 3
HP Static High Performance mode...................................................................................................... 4
HP Static Low Power mode................................................................................................................ 4
HP Dynamic Power Savings mode...................................................................................................... 4
Configuring Ultra Low Power state ..................................................................................................... 4
OS Control mode............................................................................................................................. 4
Power Regulator and Dynamic Power Savings......................................................................................... 5
Measuring CPU utilization................................................................................................................. 5
Processor granularity ........................................................................................................................ 5
Power consumption and system performance .......................................................................................... 6
Power management and reporting ....................................................................................................... 10
Insight Power Manager................................................................................................................... 10
Integrated Lights-Out (iLO) and Integrated Lights-Out 2 (iLO 2)............................................................. 12
Typical uses for Power Regulator ......................................................................................................... 13
Reducing power and cooling cost .................................................................................................... 13
Increasing server density and performance per watt ........................................................................... 15
Ensuring uptime ............................................................................................................................. 15
Summary .......................................................................................................................................... 16
For more information.......................................................................................................................... 17
Call to action .................................................................................................................................... 17
Management ............................................................................................................................. 12
Reporting .................................................................................................................................. 12

Advertisement

Table of Contents
loading

Related Manuals for HP AB500A - Integrated Lights-Out Advanced

Summary of Contents for HP AB500A - Integrated Lights-Out Advanced

  • Page 1: Table Of Contents

    Power Regulator for ProLiant servers technology brief, 4th edition Abstract.............................. 2 Introduction............................2 Processor P-states..........................2 Power Regulator technology........................3 Power Regulator modes ........................3 HP Static High Performance mode...................... 4 HP Static Low Power mode........................ 4 HP Dynamic Power Savings mode...................... 4 Configuring Ultra Low Power state .....................

  • Page 2: Abstract

    Abstract HP Power Regulator is an innovative, operating system-independent, power management feature of HP ProLiant servers. Using Power Regulator, a system administrator can manage processor power consumption and system performance to meet critical business needs. This paper describes Power Regulator technology, how it can be used, and its relationship to other power management tools. It is assumed that the reader is familiar with ProLiant servers and the Integrated Lights-Out (iLO) management processor.

  • Page 3: Power Regulator Technology

    Table 2. P-states of the Quad-core AMD Opteron 2356 2.3-GHz processor P-state Description Core Frequency Pmax Maximum performance 2.3 GHz Pmin Minimum power 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.

  • Page 4: Hp Static High Performance Mode

    Because Power Regulator runs from system firmware, changes between HP modes take effect immediately. A system reboot is required when changing into or out of OS Control mode. Not all Power Regulator modes are supported on all ProLiant servers and processor models. Beginning with G5 servers, however, all Power Regulator modes are supported on all ProLiant 200- series and above server models.

  • Page 5: Power Regulator And Dynamic Power Savings

    management feature. For this mode, system administrators must configure the operating system to activate the OS-based power management feature. If the operating system does not support dynamic power management, or if the feature has not been configured through the operating system, the processor will always run in its highest power and performance state.

  • Page 6: Power Consumption And System Performance

    Power consumption and system performance HP Power Regulator gives system administrators options for managing server power consumption and system performance to meet critical business needs. One of the key underlying characteristics of this technology is the ability of processors to operate at lower power levels without sacrificing performance at relatively high levels of application load.
  • Page 7 Figure 3. Power savings and performance comparison of Static Low Power mode vs. Static High Performance mode on a DL385 G5 server configured with two AMD 2356 2.3 GHz processors DL385 G5 Power Savings and Performance Impact Ultra Static Low vs. Static High % Load 10 20 30 40 50 60 70 80 90 100 30.00%...
  • Page 8 Figure 4. Power savings and performance comparison of Dynamic Power Savings modes vs. Static High Performance mode on a DL380 G5 server configured with two Quad-core Intel Xeon E5420 3 GHz processors DL380 G5 Power Savings and Performance Impact Dynamic vs. Static High % Load 10 20 30 40 50 60 70 80 90 100 8.00%...
  • Page 9 These test results indicate that there is a broad range of conditions under which servers can operate at low power states without affecting system performance. Since most systems operate with average application loads well below 70 percent, many systems should realize power savings without sacrificing performance.

  • Page 10: Power Management And Reporting

    continue through 60 percent processor utilization, indicating that the server is continuing to increase its throughput while the processor remains in Pmin. Beginning at 70 percent processor utilization, the picture begins to change. In Dynamic Power Savings mode, Power Regulator switches the processor to Pmax, losing the gains in performance per watt but allowing the server to meet the increased workload and throughput requirements.
  • Page 11 CPU Performance graphs display the average utilization of the server and the average CPU frequency of the server (see Figure 8). The average CPU frequency graphs the result of the system moving in and out of different processor P-states. In HP Dynamic Power Saver mode, this graph shows the CPU moving to a higher frequency as the server becomes busier and requires additional performance.

  • Page 12: Integrated Lights-Out (Ilo) And Integrated Lights-Out 2 (Ilo 2)

    Figure 8. Example Insight Power Manager “CPU Performance” graph Integrated Lights-Out (iLO) and Integrated Lights-Out 2 (iLO 2) Both the iLO and iLO2 management processors can be used to control Power Regulator. The iLO reporting and management tools are limited to individual server management. Management Power Regulator can be managed using the iLO user interface.

  • Page 13: Typical Uses For Power Regulator

    Figure 9. Lights Out display of Power Regulator processor states Typical uses for Power Regulator Power Regulator is adaptable to different environments. This section identifies three typical reasons for using Power Regulator and the expected quantified results. Reducing power and cooling cost Power Regulator can be used to improve the server power use for typical client server applications such as database, Exchange, file and print, web server, and OLTP.
  • Page 14 Figure 10. Effective power consumption of Static High Performance, Dynamic Power Savings, and Static Low Power modes on a DL385 G5 server at various system loads DL385 G5 Power Consumption vs. Load Static High Dynamic Static Low 90 100 Processor Utilization (%) Table 3.

  • Page 15: Increasing Server Density And Performance Per Watt

    Increasing server density and performance per watt Another way to take advantage of Power Regulator is to reduce power consumption of individual systems by using the Static Low Power mode to release power capacity for additional servers in a rack. This makes it possible to deploy more servers in a rack and thereby increase density and performance in cluster environments.

  • Page 16: Summary

    Summary HP Power Regulator allows IT administrators to directly reduce the frequency and core voltage of the processors. This, in turn, can significantly reduce costs for power and cooling. Administrators can monitor power consumption, keeping track of its use in relation to data center limitations. This capability allows policy management and permits chargeback to business units.

  • Page 17: For More Information

    Send comments about this paper to TechCom@HP.com. © 2007, 2008 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice. The only warranties for HP products and services are set forth in the express warranty statements accompanying such products and services.

This manual is also suitable for:

Proliant dl380 g5Proliant dl385 g5

Table of Contents