Is it possible to replace old archive by new data center based on the advanced contained cold aisle architecture? Every pessimist must be convinced by new data hall HC8 of Casablanca INT. In former archive was build a data center that consist three contained cold Aires together with side cooling units (in-row) generating the cold to installed ICT. Cold aisle reduces the volume of cold air. It also prevents the mixing of warm and cold air and optimizes airflow to the servers installed. These factors are transferred not only into lower operating costs, but also in favorable price for the customer position, in new data room there are 112 positions in 64 racks. The hall is ready to meet the demanding security requirements (more than 100 monitoring sensors, fire extinguishing system, etc.), as well as energy security (2 autonomous energy branch).