A green hosting provider- OVH
OVH, a green hosting provider

OVH has been committed to reducing energy consumption in these datacentres since 2003, notably by designing an exclusive liquid server cooling system.
As a hosting provider, OVH never ceases to invent new ways of reducing the quantity of electricity needed to run its datacentres. This keeps the cost of powering the servers down and the savings can be passed on to the customers.


Our approach since 2003



  • In-house development of exclusive cooling systems
  • Total elimination of air conditioning
  • Savings made reflected in the price of servers


Our own datacentres



Since 2010, the new OVH datacentres are free from air conditioning.

The "30% air cooling + 70% water cooling = 0% air conditioning" solution is deployed in all new datacentres, in France and Canada.



Optimisation of air flow



Rather than the traditional free cooling commonly used in datacentres, the servers are cooled directly using air from the outside.

The way that the datacentre has actually been designed plays a key role in this highly effective air flow management system. The tower design allows fresh air to directly reach the front of the servers, which regulates the temperature of the fans and air inlets.

  • Fresh air passing in front of the servers
  • Air heated by the components is evacuated at the back of the servers
  • Hot and cold air flow separated


Industrialisation of liquid cooling



One of the key elements of the OVH strategy in terms of energy efficiency is industrial deployment of water cooling systems.

This idea, born in 2003 and going against the current practices of the time, consists of using liquid inside the server itself to cool the processors. The liquid is carried by heat exchangers which are positioned on the processors and other components that emit a lot of heat.

70% of the heated generated by a server is thus captured by the liquid, which has a much higher heat transfer capacity than air.



Record PUE index



PUE (Power Usage Effectiveness) is the index used to measure datacentre energy efficiency. Thanks to efforts to reduce energy consumption and especially electricity, OVH has been able to achieve a PUE of between 1 and 1.2.

A better result than the average datacentre.

Find out more about our datacentres:
OVH: Expert in datacentre design and construction


OVH Green products and services



Dedicated Cloud

The virtual machines of the Dedicated Cloud can be located at the BHS datacentre where they benefit from the hydroelectric energy of the nearby damn.

OVH Dedicated Cloud
Big Data

Mainly clusters are hosted in RBX4, the first OVH datacentre to eliminate air conditioning Big Data.

OVH Big Data
Dedicated servers

In 2004, OVH developed an innovative water cooling technology. This liquid cooling system is actually located on the racks and it enables evacuation of 70% of the heat emitted by the servers.

OVH Dedicated Servers