Data Center Assessment; Component Power And Cooling; Processor Power And Cooling; Processor P-State - Compaq BL10e - HP ProLiant - 512 MB RAM Introduction Manual

The HP Systems Insight Manager (SIM) sizing tool assists systems administrators in building highly
available, high-performance HP SIM deployments running on Microsoft Windows®, Linux®, or HP-UX
operating systems. With input from quality assurance and performance testing, the tool recommends
server configurations based on projected management workloads, installed management
applications, and number of console users. The tool also provides performance and configuration
data designed to help systems administrators optimize the performance of existing HP SIM
deployments.
To see the complete offering of HP sizers and configurators, go to the HP ActiveAnswers tools web
page at http://h71019.www7.hp.com/ActiveAnswers/cache/71114-0-0-0-121.html

Data center assessment

An evaluation of current workloads, facility infrastructure, and server configurations is necessary to
determine existing power and cooling requirements, and to project future requirements. IT
administrators and data center managers should have access to methodologies and services designed
to assess existing conditions, identify problems, and indicate solutions. HP Datacenter Thermal
Assessment Services provide a thorough review and analysis of facility infrastructure. If risks or
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deficiencies are found, a qualitative and quantitative explanation is provided for each, including
prioritized recommendations based on industry experience, industry standards, and engineering and
operational best practices.

Component power and cooling

This section addresses efficient practices for power and cooling at a component level and the
individual solutions required for each component.

Processor power and cooling

Processor power and cooling requirements depend on the per watt performance of an individual
processor. The ability to manage this performance in relation to demand, at both the processor and
chip levels, is crucial to avoiding power and cooling issues.

Processor P-state

The latest server processors from Intel and AMD have power state registers that are available to
programmers. With the appropriate ROM firmware or operating system interface, these hardware
registers can be used to switch a processor between different performance states or P-states
Changing the performance state (that is, the processor frequency and voltage) enables processors to
operate at different power levels. Tables 1 and 2 list P-states exposed by the Intel® Xeon™ 3.8-
GHz/800-MHz and
Quad-Core 2.66-GHz
Table1. P-states of the Intel Xeon 3.8-GHz processor
P-state Description
Pmax Maximum performance
Pmin Minimum power
1 For more information go to
121.html?jumpid=reg_R1002_USEN.
P-states—The ACPI body defines P-states as processor performance states. For Intel and AMD processors, a P-
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state is defined by a fixed operating frequency and voltage.
processors.
Core frequency
3.8 GHz
2.8 GHz
http://h20219.www2.hp.com/services/cache/114078-0-0-225-
Approximate core
voltage
1.4 VDC
1.2 VDC
.
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