Intel® Server Board S1200SP Family Technical Product Specification
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5.3 Intel
®
Intelligent Power Node Manager
Data centers are faced with power and cooling challenges that are driven by increasing numbers of servers
deployed and server density in the face of several data center power and cooling constraints. In this type of
environment, Information Technology (IT) needs the ability to monitor actual platform power consumption
and control power allocation to servers and racks in order to solve specific data center problems including the
following issues.
Table 10. Intel
®
Intelligent Power Node Manager
Ability to monitor actual power consumption
Control capability that can maintain a power budget to enable dynamic
power allocation to each server
Under-population of rack space
Control capability that can maintain a power budget to enable increased rack
population
Control capability that can maintain a power budget to ensure that a set
energy cost can be achieved
Ability to monitor actual power consumption to enable power usage
modeling over time and a given planning period
Ability to understand cooling demand from a temperature and airflow
perspective
Detection and correction of hot
spots
Control capability that reduces platform power consumption to protect a
server in a hot-spot
Ability to monitor server inlet temperatures to enable greater rack
utilization in areas with adequate cooling
The requirements listed above are those that are addressed by the Intel
®
C230 series chipset Management
Engine (ME) and Intel
®
Intelligent Power Node Manager (NM) technology. The ME/NM combination is a power
and thermal control capability on the platform, which exposes external interfaces that allow IT (through
external management software) to query the ME about platform power capability and consumption, thermal
characteristics, and specify policy directives (for example, set a platform power budget).
Node Manager (NM) is a platform resident technology that enforces power capping and thermal-triggered
power capping policies for the platform. These policies are applied by exploiting subsystem knobs (such as
processor P and T states) that can be used to control power consumption. NM enables data center power
management by exposing an external interface to management software through which platform policies can
be specified. It also implements specific data center power management usage models such as power limiting
and thermal monitoring.
The NM feature is implemented by a complementary architecture utilizing the ME, BMC, BIOS, and an ACPI-
compliant OS. The ME provides the NM policy engine and power control/limiting functions (referred to as Node
Manager or NM) while the BMC provides the external LAN link by which external management software can
interact with the feature. The BIOS provides system power information utilized by the NM algorithms and also
exports ACPI Source Language (ASL) code used by OS-Directed Power Management (OSPM) for negotiating
processor P and T state changes for power limiting. PMBus*-compliant power supplies provide the capability
to monitoring input power consumption, which is necessary to support NM.
Following are the some of the applications of Intel
®
Intelligent Power Node Manager technology: