Power Management And Reporting; Insight Power Manager - HP AB500A - Integrated Lights-Out Advanced Technology Brief

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. In Static Low Power mode, the server remains in Pmin,
maintaining higher performance per watt efficiency at the expense of constraining the increase in
system throughput.
Figure 7. Comparison of the gain in performance/watt of Static Low Power and Dynamic Power Savings modes
compared to Static High Performance mode on a DL385 G5 server
25.0
20.0
15.0
10.0
5.0
0.0
10

Power management and reporting

HP Insight Power Manager (IPM) and Integrated Lights-Out (iLO and iLO 2) management processors
represent two important tools for reporting power management information on HP ProLiant servers. In
addition to reporting historical and analytical server power management information, both Insight
Power Manager and iLO processors can be used to manage HP Power Regulator settings.

Insight Power Manager

Insight Power Manager (IPM) is a ProLiant Essentials product that is part of HP Systems Insight
Manager. The IPM product provides graphing and historical analysis of key power and thermal data
for supported ProLiant servers. IPM can store up to three years of power and thermal data and it
supports graphing and analysis for single or multiple server views.
IPM provides three types of graphs and analysis for single-server views:
Power Consumption graphs display the power consumed by the server in watts or Btu/hr. Analysis
includes an annual estimate of the power and cooling costs for the server. If desired, this information
could be used for budgetary purposes or for allocating power costs.
Percent Gain in Performance per Watt
ProLiant DL385 G5
Static Low vs. Static High Dynamic vs. Static High
20 30 40 50
Processor Utilization (%)
60 70 80 90 100
10