Power Supply Units; Thermal And Acoustics - Dell PowerEdge M820 Technical Manual

Feature
Dell Fresh Air cooling
Rack infrastructure
Find additional information at

Power supply units

The M1000e chassis enclosure provides power and cooling for the M820 blade server. For
information on the M1000e power supply units, see the
Dell.com/PowerEdge.

Thermal and acoustics

Optimized thermal management keeps fan speeds in the PowerEdge M820 as low as possible,
contributing to quiet operation and ensuring proper component cooling.
Thermal design
The thermal design of the PowerEdge M820 reflects the following:

Comprehensive thermal management: The PowerEdge M820 dynamically controls system
cooling fan speed, based on responses from critical sensors that monitor the temperature of
several components, including:
Processors
—
DIMMs
—
System inlet ambient
—
Mezzanine card
—
NDC
—
Thermal control also detects and responds to hardware configuration. Thermal management
adjusts cooling according to what the system really needs, and draws lower fan power draw and
generates lower acoustical noise levels than those without such controls.
PowerEdge M820 Technical Guide
28
Description
accessed through Dell iDRAC7 Enterprise and OpenManage Power Center
that allows policy-based management of power and thermals at the
individual server, rack and data center level.
Hot spare reduces 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.
Idle power enables Dell servers to run as efficiently when idle as when at full
workload.
With the thermal design and reliability of Dell products, certain
configurations have the capability to operate at excursion-based
temperatures beyond the industry standard of 35°C (95°F) up to 45°C (113°F)
for excursionary periods of time and up to a 26°C dew point at 90% relative
humidity without impacting your availability model. Find additional
information at Dell.com/FreshAir.
Dell offers some of the industry's highest efficiency power infrastructure
solutions, including:

Power distribution units

Uninterruptible power supplies

Energy Smart containment rack enclosures
Find additional information at Dell.com/RackInfrastructure.
Dell.com/PowerAndCooling and Dell.com/PowerCenter.
PowerEdge M1000e Technical Guide
on