What You Will Learn
The Cisco® Global Cloud Index is an ongoing effort to forecast the growth of global data center and cloud-based IP traffic. The forecast includes trends associated with data center virtualization and cloud computing. This document presents the details of the study and the methodology behind it.
Global data center traffic:
- Annual global data center IP traffic will reach 6.6 zettabytes by the end of 2016. By 2016, global data center IP traffic will reach 554 exabytes per month (up from 146 exabytes per month in 2011).
- Global data center IP traffic will nearly quadruple over the next 5 years. Overall, data center IP traffic will grow at a compound annual growth rate (CAGR) of 31 percent from 2011 to 2016.
Data center virtualization and cloud computing transition:
- The number of workloads per installed traditional server will increase from 1.5 in 2011 to 2.0 by 2016.
- The number of workloads per installed cloud server will increase from 4.2 in 2011 to 8.5 by 2016.
- By 2016, nearly two-thirds of all workloads will be processed in the cloud.
Global cloud traffic:
- Annual global cloud IP traffic will reach 4.3 zettabytes by the end of 2016. By 2016, global cloud IP traffic will reach 355 exabytes per month (up from 57 exabytes per month in 2011).
- Global cloud IP traffic will increase six-fold over the next 5 years. Overall, cloud IP traffic will grow at a CAGR of 44 percent from 2011 to 2016.
- Global cloud IP traffic will account for nearly two-thirds of total data center traffic by 2016.
Regional cloud readiness:
- North America and Western Europe led in broadband access (fixed and mobile) in 2011 and will continue to lead in this category through 2016. However, all regions will show measurable improvement in broadband access to their respective populations throughout the forecast period. Asia Pacific leads in the number of subscribers throughout the forecast period due to the region's large population (see Broadband Ubiquity section for details).
- Western Europe leads all regions with an average fixed download speed of 11.7 Mbps. North America follows with an average fixed download speed of 10.3 Mbps. Asia Pacific and Central and Eastern Europe lead all regions in average fixed upload speeds of 6.7 Mbps and 5.9 Mbps, respectively (see Download and Upload Speed Overview section for details).
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