Data centers are generally massive and at the same time, they are very beautiful too.

Facebooks CEO Mark Zuckerberg recently shared few images of its Lulea, Sweden-based data center from his account.

Energy consumptions of huge data centers have always been a headache for tech companies.

I love this shot because it looks like a sci-fi movie. These enormous fans draw in the outside air to cool the tens of thousands of servers in the data hall. In the winter, when temperatures plunge to -30 degrees the situation is reversed, and the heat from the servers warm the massive buildings.

Microsoft has been exploring the possibility to create underwater data centers.

However, for facebook keeping the internet cool is simple.

Facebooks CEO Mark Zuckerberg recently shared few images of its Lulea, Sweden-based data center from his account.

“There is no more efficient data center in the world.” - Jay Park, Director of Data Center Design Engineering“There is no more efficient data center in the world.” - Jay Park, Director of Data Center Design Engineering

Lulea is a small town which is less than 70 miles south of the Arctic circle.

The whole system is 10% more efficient and uses almost 40% less power than traditional data centers.

The data center is huge, but the idea that launched it began on the back of this paper napkin. Late one night, while traveling, engineer Jay Park sketched his vision for a system that streamlined the way power moves from the local utility grid to our servers.

About 150 people work here, but the data halls are frequently empty. Because of the simplified design, we need only one technician for every 25,000 servers.

The main data hall is so big that engineers move around on scooters.

The equipment is reduced to its basics so it runs cooler. It can also be easily accessed and repaired quickly. A few years ago, it took an hour to repair a server hard drive. At Luleå, that’s down to two minutes.

Old and obsolete hard drives are crunched, forever protecting privacy. Christer Jonsson is in charge of this important task. “I must be very careful,” he says.

The center opened in 2013, and was our first outside the US. Wherever possible, we used the beautiful wood and art of the area to showcase local craftsmanship.

The building’s exterior reflects the innovative designs inside.

“Working here is to be trusted with great responsibilities since this is a really important center for all our users. I like the challenge to not only do my best, but also to always find better and more safe solutions for us.” - Joakim Karlson, Mechanical Systems Specialist

“The biggest challenge working here? Getting to the data center by car when it is -30 degrees C outside!” - Emilie De Clercq, Data Center Technician

“Look at these racks, the network devices, the cabling. Everything is like reference model!” - Max Zavyalov, Network Engineer in Edge & Network Services team

“There’s a beauty in all of this. It’s like a massive and very well-orchestrated machine, where everything works in concert and allows people across the planet to communicate and share in an incredibly efficient way.” - Joel Kjellgren, Luleå Site Manager

“It is important for people to know that nothing leaves the site and their data is safe. The old drives are destroyed." - Christer Jonsson, Server Technician

“It’s a very important job, and I am very proud to be trusted with that responsibility.” - Linnéa Svallfors, Security Officer

Luleå is a small coastal town just south of the Arctic Circle, and near the top of the world. It’s surrounded by dense forests and icy rivers.

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