Cooling for data center is at the most importance – even in challenging climates. Proven technologies such as use of direct free, evaporative direct or indirect cooling or various liquid cooling solutions can be used to effectively cool IT equipment in data centers.
Determining the best solution for a data center involves finding out the environmental conditions for air cooled systems for recommended temperature and humidity range. And reviewing the climate conditions to determine the number of hours of free cooling or the opportunity for partial free cooling is also necessary. Review ability to reduce or shift computing workload for short periods when environmental conditions are not desirable.
Source: Guide to Minimizing Compressor-based Cooling in Data Centers by William Tschudi, Lawrence Berkeley National Laboratory