Dell EMC PowerEdge R940xa - 8 Power, Thermal and Acoustics; Power Consumption and Energy Efficiency

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Power, thermal and acoustics
PowerEdge servers have an extensive collection of sensors that automatically track thermal activity, which helps regulate
temperature thereby reducing server noise and power consumption.
Power consumption and energy eciency
With the rise in the cost of energy coupled with increasing data center density, Dell EMC provides tools and technologies to help you
realize greater performance with lower energy cost and wastage. More ecient data center usage can reduce costs by slowing the
need for additional data center space. The following table lists the tools and technologies that Dell EMC oers to help you achieve
your data center goals by lowering power consumption and increasing energy eciency.
Table 17. Power tools and technologies
Feature Description
Power supply units (PSU) portfolio PSU portfolio includes intelligent features such as dynamically optimizing eciency
while maintaining availability and redundancy. For more information, see the Power
supply units section.
Tools for right-sizing Enterprise Infrastructure Planning Tool (EIPT) is a tool that helps you plan and tune
your computer and infrastructure equipment for maximum eciency by calculating
hardware power consumption, power infrastructure and storage. Learn more at
Dell.com/calc.
Power monitoring accuracy PSU power monitoring improvements include:
• Power monitoring accuracy of 1%, whereas the industry standard is 5%
• More accurate reporting of power
• Better performance under a power cap
Power capping Use Dell EMC systems management tools such as OpenManage Power Center and
iDRAC9 with an Enterprise license can be used to set a power limit for your server. This
limits the output of a PSU and reduce system power consumption and help in
constrained power situations.
Systems management The integrated Dell Remote Access Controller 9 (iDRAC9) with Lifecycle Controller is
embedded within every Dell EMC PowerEdge™ server and provides functionality that
helps IT administrators deploy, update, monitor, and maintain servers with no need for
any additional software to be installed. iDRAC functions regardless of operating system
or hypervisor presence because from a pre-OS or bare-metal state, iDRAC is ready to
work because it is embedded within each server from the factory.
Active power management Dell EMC oers a complete power management solution accessed through the iDRAC9
with Enterprise licensing and OpenManage Power Center to implement policy-based
management of power and thermal levels at the individual system, rack, or data center
level. Hot spares reduce power consumption of redundant power supplies. Thermal
control of fan speed optimizes the thermal settings for your environment to reduce fan
consumption and lower system power consumption.
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