Rien Dijkstra

“What is happening in “the last mile” (the access networks) caused by the end user’s behavior will have a big impact on the debate of data center sustainability. Research conducted by Bell Labs and the University of Melbourne (CEET 2013) show that by 2015 wireless cloud (Wi-Fi and cellular technology) will consume between 32 TWh (low scenario) and 43 TWh (high scenario) compared to only 9.2 TWh in 2012. An increase between 248% and 367%. The take-up of wireless devices is shown by the fact that global mobile data traffic overall is currently increasing at 78% per annum and mobile cloud traffic specifically is increasing at 95% per annum. Wireless cloud traffic is about 20% of mobile traffic and approximately 35% of data center traffic. The result of this is that wireless access network technologies account for 90% of total wireless cloud energy consumption. Data centers account for only about 9%. The energy consumption of wireless user devices is negligible.”
― Rien Dijkstra, Data Center 2.0: The Sustainable Data Center

“And this is not the only example. During recent warm, dry summers in 2003, 2006, and 2009, several thermoelectric power plants in Europe were forced to reduce production because of restricted availability of cooling water.”
― Rien Dijkstra, Data Center 2.0: The Sustainable Data Center