Power, Thermal, Acoustic; Power Supplies; Figure 21. Power Supplies In M1000E - Dell PowerEdge M1000e Technical Manual

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5 Power, Thermal, Acoustic

Built on Dell Energy Smart technology, the M1000e is one of the most power-efficient blade solutions
on the market. The M1000e enclosure takes advantage of Energy Smart thermal design efficiencies,
such as ultra-efficient power supplies and dynamic power-efficient fans with optimized airflow
design to efficiently cool the chassis and enable better performance in a lower power envelope.
A modular system has many advantages over standard rack mount servers in terms of power
optimization, and this aspect was a focal point throughout the M1000e's conceptualization and
development. The key areas of interest are power delivery and power management.
The M1000e provides industry-leading power efficiency and density, accomplished through highly
efficient components, improved design techniques, and a fresh air plenum that reduces the air
temperature to the power supply components. Lower operating temperature equates to higher power
density for the power supply (exceeding 21 Watts per cubic inch) and higher power efficiency (better
than 87% at 20% load and higher at heavier loads, approaching 91% efficiency under normal operating
conditions).
Power efficiency in the M1000e does not stop with the power supply. Every aspect of efficiency has
been tweaked and improved from previous designs—adding more copper to PC board power planes to
reduce I2R losses, improving inductors and other components, increasing efficiencies of DC‐DC
converters, and replacing some linear voltage regulators with more-efficient switching regulators.
See Section 15 for more information on external power connection accessories.
5.1

Power Supplies

The power distribution inside the M1000e Modular Server System consists of a power supply system
located in the rear bottom of the chassis.

Figure 21. Power Supplies in M1000e

PowerEdge M1000e Technical Guide 26