If they get too hot, the servers crash. Going underground insulates a data center against hot summers. But the same insulation that keeps ambient temperatures in the mid-60s also requires robust ventilation of the heat the machines generate. Google along with Amazon, one of the biggest operators of data centers in the world announced this month that in 2017 its server farms will run only on renewable energy such as solar panels and wind turbines. In the end, Kidd and industry analysts said, the costs of setting up and operating a server farm largely balance out the above/below cost variables. If you were in an apples-to-apples scenario, its slightly more energy efficient underground, he said. Now, are those enormous cost savings? No. Information technology bosses often dont start out looking for below-ground space. But those IT managers can be like a car shopper who stumbles across a model with all of the latest crash avoidance features. Once theyve seen it, anything less doesnt รองเท้าผ้าใบผู้ชาย adidas feel quite safe enough.
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Bana Alabed, aged 7: "I am talking to the world now live from East #Aleppo. This is my last moment to either live or die." White Helmets tweet: "All streets & destroyed buildings are full with dead bodies. It's hell." Abdul Kafi Alhamado, teacher: "Some people are under the rubble, no-one can help them. They just leave them under the rubble until they die - these houses as their graves." The 'final goodbyes' from Aleppo What does this mean for the civil war? This is a huge blow to the armed opposition, and a major victory for the Russians, the Iranians, Lebanon's Hezbollah and some Iraqi Shia militias. But the rebels still control quite รองเท้าวิ่ง สวย ๆ ถูก ๆ large areas, as do the jihadists of so-called Islamic State. So in terms of Syria itself the war continues. The BBC's Middle East editor Jeremy Bowen says it will be a different type of war - less rebels trying to hold territory and create their own entity, more hit-and-run and insurgency. How did Aleppo reach this point?