Optical Switching in Next-Generation Data Centers: Architectures Based on Optical Switching

Optical Switching in Next-Generation Data Centers: Architectures Based on Optical Switching

Vaibhav Shukla (Allenhouse Institute of Technology, India), Rajiv Srivastava (Independent Researcher, India) and Dilip Kumar Choubey (National Institute of Technology Patna, India)
Copyright: © 2019 |Pages: 30
DOI: 10.4018/978-1-5225-8531-2.ch008
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The leading content provider companies like Google, Yahoo, and Amazon installed mega-data centers that contain hundreds of thousands of servers in very large scale. The current data center systems are organized in the form of the hierarchal tree structure based on bandwidth-limited electronic switches. Modern data center systems face a number of issues like high power consumption, limited bandwidth availability, server connectivity, energy and cost efficiency, traffic complexity, etc. One of the most feasible solution of these issues is the use of optical switching technologies in the core of data center systems. In this chapter a brief description about the modern data center system is presented, and some prominent optical packet switch architectures are also presented in this chapter with their pros and cons.
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Future Scenario Of Data Centre

The rise of cloud computing and other emerging web applications have created the need of more powerful warehouse-scale data centres. These data centres comprise hundreds of thousands of servers that need to communicate with each other via high performance and low latency interconnection networks (Kachris et al, 2013). With the rapid growth of Internet applications, data centres have witnessed demands for more and more storage, computation power and communication bandwidth. In present days telecommunication environment thousands of servers, are very common in heavy data centre systems. In the recent survey report given by Cisco (“Cisco Global index”, 2011), the yearly worldwide data centre traffic is expected to reach several zetta-bytes by the end of 2017.In near future, the data traffic which is generated between the data centres and within the data centre is expected to grow extensively. This increase in the traffic, generates the need of high performance network technologies and architectures for intra and inters data centre networks. In the present electrical data centre network, the major challenge in the design of the data centre is the power consumption of the infrastructure, mainly due to the associated operational expenditure (OPEX) costs. According to relevant studies, data centre networks consume around 10–20 percent of the total IT power consumption of data centre sites, and this is expected to increase soon in near future (Kachris et al, 2013).

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