In the second annual Cisco Global Cloud Index (2011-2016) , Cisco forecasts global data center traffic to grow fourfold and reach a total of 6.6 zettabytes annually by 2016. The company also predicts global cloud traffic, the fastest-growing component of data center traffic, to grow sixfold – a 44 percent combined annual growth rate (CAGR) – from 683 exabytes of annual traffic in 2011 to 4.3 zettabytes by 2016. For context, 6.6 zettabytes is equivalent to: 92 trillion hours of streaming music – Equivalent to about 1.5 years of continuous music streaming for the world's population in 2016. 16 trillion hours of business Web conferencing – Equivalent to about 12 hours of daily Web conferencing for the world's workforce in 2016. 7 trillion hours of online high-definition (HD) video streaming – Equivalent to about 2.5 hours of daily streamed HD video for the world's population in 2016. The vast majority of the data center traffic is not caused by end use...
Digital Business Transformation Journal