Energy Efficiency for Data Centers

Energy Efficiency for Data Centers

Optimize cooling

CONSUMERS IN A DATA CENTER 


Since active cooling systems are notoriously energy intensive, the best way to reduce energy consumption starts here. To start reducing their energy consumption, we need to look at the two main priorities:

  • Optimizing the design of the white space (also known as the IT room or the heart of the data center): Legrand can help you choose solutions during the definition phase of the room design. For example, enclosing the corridors helps to greatly reduce the need for active cooling. Another example is an intelligent busbar solution that favours airflow by reducing disturbance to the airflow in the underfloor. 
  • Selection of the most suitable cooling solutions. For example, data centers today are increasingly using energy-efficient cooling technologies such as free cooling. 

 

REDUCING POWER LOSSES CAN SIGNIFICANTLY LOWER THE ENERGY CONSUMPTION OF YOUR DATA CENTERS

Power losses associated with power conversion and UPS (uninterruptible power supply) systems currently account for approximately 10% of a data center's total energy consumption, with cooling alone accounting for 32%.


Given the efforts being made in the area of cooling, in particular through designs that allow the use of free cooling, speed-controlled devices and the separation of cold and hot air, these power losses will account for a large proportion of the data center's energy consumption and hence its energy bill.


To increase the efficiency of the electrical infrastructure, solutions must be found to reduce this percentage, particularly through the power supply and distribution systems, such as interlock relays in intelligent PDUs [link to Raritan PX page], high-efficiency transformers [link to local transformer page] and high-efficiency UPS .


Various products that provide high performance equipment improve energy quality and limit power losses, reducing the environmental footprint.

POWERFUL MONITORING FOR OPTIMIZED ENERGY CONSUMPTION

Add additional information about environmental solutions - monitor data with KPIs to reduce your cooling needs, etc. 
To achieve higher efficiency, optimized cooling systems and reduced power dissipation, it is crucial that we also look at measurement and monitoring systems. 
These systems provide real-time information on consumption per application, total equipment consumption and the power consumed by the equipment. Understanding what is being used where is the basis for intelligent decisions in the data center. 
There are three possible measurement points:


TOTAL DATA CENTER CONSUMPTION
The total energy consumed by the data center (in the equipment room) is measured. The measurement of consumption must be incorporated into the main distribution board of the low-voltage network so that the losses of the UPS, the power consumed by the cooling system and the consumption of IT equipment can be consolidated.

 

CONSUMPTION ACCORDING TO THE USVS
In computer rooms with a mix of equipment, energy consumption varies from one phase to another. In order to allow maintenance to balance the phases, it is advisable to provide measuring modules in the secondary distributors of the rooms with direct indication of the currents per phase. However, it is also possible to feed back the consumption data by means of electronic cards inside the UPS to calculate the PUE.

 

TOTAL CONSUMPTION OF A RACK AND/OR A SERVER
The energy consumed by the IT systems is measured. This is done with the help of Power Distribution Units (PDU), intelligent rack transfer switches and monitoring solutions leading to PUE. For example, Raritan's PX intelligent PDUs are equipped with monitoring capabilities that detect hidden problems in your power chain, test for true redundancy and implement more efficient load balancing with detailed power measurements of each server.