FANS


Licenced to cool T


hirty meters beneath Stockholm’s tranquil Södermalm district is one of the most secure – and extraordinary – data centres in the world. In a retired fallout shelter called Pionen, the data centre operator BAHNHOF stores its customers’ data behind steel doors 50 centimeters thick. Extra protection is provided by surveillance cameras and a security service. It is no accident that the room looks a bit like a scene from a James Bond film; the operators


20 January 2020


got inspiration from the legendary series of films when designing the interior of the data centre. But instead of villains and their henchmen, Pionen is staffed by highly qualified employees working to store their customers’ data as safely and securely as possible.


That also includes high-performance air conditioning to dissipate the heat from the servers and supply them constantly with cool air. But for a long time, the air conditioning


The Swedish provider Bahnhof converted a bunker in Stockholm into an unusual data centre. Fans from ebm-papst keep the electricity bill just as cool as the location.


system was not a good fit with the operator’s high-tech philosophy as its Computer Room Air Conditioning (CRAC) units used inefficient, belt- driven fans. “A major disadvantage of belt drive is that the fans emit dirt particles, and that’s the last thing we need here,” says Kristian Thorin, project manager at BAHNHOF. “Sure, filters solve some of the problems, but there are still dirt particles in the server area. Besides, we had to do frequent maintenance, including the replacement


www.acr-news.com


(Photo credit: Banhof)


Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8  |  Page 9  |  Page 10  |  Page 11  |  Page 12  |  Page 13  |  Page 14  |  Page 15  |  Page 16  |  Page 17  |  Page 18  |  Page 19  |  Page 20  |  Page 21  |  Page 22  |  Page 23  |  Page 24  |  Page 25  |  Page 26  |  Page 27  |  Page 28  |  Page 29  |  Page 30  |  Page 31  |  Page 32  |  Page 33  |  Page 34  |  Page 35  |  Page 36  |  Page 37  |  Page 38  |  Page 39  |  Page 40  |  Page 41  |  Page 42  |  Page 43  |  Page 44  |  Page 45  |  Page 46  |  Page 47  |  Page 48  |  Page 49  |  Page 50  |  Page 51  |  Page 52  |  Page 53  |  Page 54  |  Page 55  |  Page 56  |  Page 57  |  Page 58  |  Page 59  |  Page 60  |  Page 61  |  Page 62  |  Page 63  |  Page 64