Dell PowerEdge M1000e Technical Manual

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Contents

Dell PowerEdge M1000e Technical Manual Manual pdf 35 page image

35 PowerEdge M1000e Technical Guide8 Power, thermal and acousticsLower overall system-level power draw is a result of Dell’s breakthrough system design. ThePowerEdge M1000e chassis enclosure and blade servers maximize performance-per-watt through acombination of power and cooling, energy efficient technologies, and tools. Additionally, thePowerEdge modular blade servers have an extensive collection of sensors that automatically trackthermal activity, which helps regulate temperature thereby reducing server noise and powerconsumption.Built on Dell Energy Smart technology, the M1000e is one of the most power-efficient bladesolutions on the market. The M1000e enclosure takes advantage of Energy Smart thermal designefficiencies, such as ultra-efficient power supplies and dynamic power-efficient fans with optimizedairflow design to efficiently cool the chassis and enable better performance in a lower powerenvelope.A modular system has many advantages over standard rack-mount servers in terms of poweroptimization, and this aspect was a focal point throughout the M1000e’s conceptualization anddevelopment. The key areas of interest are power delivery and power management.The M1000e provides industry-leading power efficiency and density, accomplished through highlyefficient components, improved design techniques, and a fresh air plenum that reduces the airtemperature to the power supply components. Lower operating temperature equates to higherpower 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 normaloperating conditions).Power efficiency in the M1000e does not stop with the power supply. Every aspect of efficiency hasbeen tweaked and improved from previous designs — adding more copper to PC board powerplanes to reduce I2R losses, improving inductors and other components, and replacing some linearvoltage regulators with more efficient switching regulators.Power suppliesThe power distribution inside the M1000e modular server system consists of a power supply systemlocated in the back of the chassis as shown in Figure 18.Figure 18. Power supplies in M1000e