The New Cisco Global Cloud Index was developed to estimate global data center and cloud-based IP traffic growth and trend patterns.
It is generated from a modeling and analysis of various primary and secondary sources, including more than 30 terabytes of data generated each month over the past year from a variety of data centers around the globe, measurements of more than 45 million broadband-speed tests and third-party market forecasts.
It also includes a “workload transition” forecast on the workload shift from traditional data centers to the cloud as well as a “Cloud Readiness” analysis of major geographic regions regarding their networks’ abilities to support various types of business and consumer cloud-computing
The Index Projects Cloud Computing Traffic to Grow 12-Fold by 2015 with Cloud to be 51 percent of Data Center Workloads by 2014. The vast majority of the data center traffic is not caused by end users but by the data centers and clouds themselves undertaking activities such asbackup and replication. By 2015, 76 percent of data center traffic will remain within the data center, 17 percent of the total traffic leaves the data center to be delivered to the end user, and an additional 7 percent of total traffic is generated between data centers through activities such as cloud-bursting, data replication and updates. Here’s an explanation of the breakdown: