Design and Analysis of AWG and FDL-Based Optical Switch in Data Centre Network

2021 ◽  
pp. 980-1001
Author(s):  
Vaibhav Shukla ◽  
Dilip Kumar Choubey
Keyword(s):  
High Performance ◽  
Optical Switch ◽  
Optical Network ◽  
Optical Networking ◽  
Internet Applications ◽  
Data Centre ◽  
Computing Services ◽  
Cloud Computing Services ◽  
Overall Performance ◽  
Networking Technologies

Optical networking technologies can play a significant role in the realization of grid and data centre systems. The new and developing internet applications are progressively becoming high performance and network based, and the performance of these applications are depending on the optical network and cloud computing services. In this chapter, the authors discuss the capabilities of optical transmission and the switching techniques. An AWG-based optical switch is discussed in the chapter and the performance of switch is measured in physical and network layer parameters. Design modifications in the switch is suggested, for improving the performance of switch. The overall performance of switch is also measured when the switch is placed into the network where cascading of two or more switches are required.

scholarly journals Optimize the Power Consumption and SNR of the 3D Photonic High-Radix Switch Architecture Based on Extra Channels and Redundant Rings

2018 ◽  
Vol 2018 ◽  
pp. 1-8
Author(s):  
Jie Jian ◽  
Mingche Lai ◽  
Liquan Xiao
Keyword(s):  
High Performance ◽  
Process Variation ◽  
Optical Switch ◽  
Signal To Noise Ratio ◽  
Thermal Sensitivity ◽  
Optical Network ◽  
Research Field ◽  
Switch Architecture ◽  
Static Power ◽  
High Radix

The demand from exascale computing has made the design of high-radix switch chips an attractive and challenging research field in EHPC (exascale high-performance computing). The static power, due to the thermal sensitivity and process variation of the microresonator rings, and the cross talk noise of the optical network become the main bottlenecks of the network’s scalability. This paper proposes the analyze model of the trimming power, process variation power, and signal-to-noise ratio (SNR) for the Graphein-based high-radix optical switch networks and uses the extra channels and the redundant rings to decrease the trimming power and the process variation power. The paper also explores the SNR under different configurations. The simulation result shows that when using 8 extra channels in the 64×64 crossbar optical network, the trimming power reduces almost 80% and the process variation power decreases 65% by adding 16 redundant rings in the 64×64 crossbar optical network. All of these schemes have little influence on the SNR. Meanwhile, the greater channel spacing has great advantages to decrease the static power and increase the SNR of the optical network.

scholarly journals A Proposed Architecture f or Placement of Cloud Data Centre in Software Defined Network Environment

2021 ◽  
Vol 11 (2) ◽  
pp. 104-116
Author(s):  
Mohit Mathur ◽  
◽  
Mamta Madan ◽  
Mohit Chandra Saxena ◽  
◽  
...  
Keyword(s):  
Data Centers ◽  
Wearable Devices ◽  
Software Defined Network ◽  
Cloud Data ◽  
Data Centre ◽  
Computing Services ◽  
Delay Sensitive ◽  
Smart Watch ◽  
Cloud Computing Services ◽  
Minimum Delay

Emerging technologies like IoT (Internet of Things) and wearable devices like Smart Glass, Smart watch, Smart Bracelet and Smart Plaster produce delay sensitive traffic. Cloud computing services are emerging as supportive technologies by providing resources. Most services like IoT require minimum delay which is still an area of research. This paper is an effort towards the minimization of delay in delivering cloud traffic, by geographically localizing the cloud traffic through establishment of Cloud mini data centers. The anticipated architecture suggests a software defined network supported mini data centers connected together. The paper also suggests the use of segment routing for stitching the transport paths between data centers through Software defined Network Controllers.

Towards Energy Efficiency for Cloud Computing Services

2013 ◽  
pp. 306-328
Author(s):  
Daniele Tafani ◽  
Burak Kantarci ◽  
Hussein T. Mouftah ◽  
Conor McArdle ◽  
Liam P. Barry
Keyword(s):  
Cloud Computing ◽  
Energy Consumption ◽  
Energy Efficient ◽  
Green Technologies ◽  
Core Networks ◽  
Data Centre ◽  
Computing Services ◽  
Efficient Data ◽  
Cloud Computing Services ◽  
Data Centres

Over the past decade, the increasing complexity of data-intensive cloud computing services along with the exponential growth of their demands in terms of computational resources and communication bandwidth presented significant challenges to be addressed by the scientific research community. Relevant concerns have specifically arisen for the massive amount of energy necessary for operating, connecting, and maintaining the thousands of data centres supporting cloud computing services, as well as for their drastic impact on the environment in terms of increased carbon footprint. This chapter provides a survey of the most popular energy-conservation and “green” technologies that can be applied at data centre and network level in order to overcome these issues. After introducing the reader to the general problem of energy consumption in cloud computing services, the authors illustrate the state-of-the-art strategies for the development of energy-efficient data centres; specifically, they discuss principles and best practices for energy-efficient data centre design focusing on hardware, power supply specifications, and cooling infrastructure. The authors further consider the problem from the perspective of the network energy consumption, analysing several approaches achieving power efficiency for access, and core networks. Additionally, they provide an insight to recent development in energy-efficient virtual machine placement and dynamic load balancing. Finally, the authors conclude the chapter by providing the reader with a novel research work for the establishment of energy-efficient lightpaths in computational grids.

scholarly journals Post adoption evaluation model for cloud computing services utilization in universities in Kenya

2013 ◽  
Vol 5 (3) ◽  
pp. 614-628
Author(s):  
Muhambe Titus Mukisa ◽  
Daniel Orwa Ochien
Keyword(s):  
Cloud Computing ◽  
Technology Adoption ◽  
Focus Group ◽  
Focus Group Discussion ◽  
Group Discussion ◽  
Cloud Services ◽  
Adoption Studies ◽  
Internet Applications ◽  
Computing Services ◽  
Cloud Computing Services

Cloud Computing, a recent technology development presents a paradigm shift in computing, a move away from personal computers and enterprise server systems, to a cloud of computers located on the internet. Applications and resources are accessed from the cloud. The introduction of cloud computing services in Kenya by some telecommunication company like Safari Cloud from Safaricom Limited is an indicator that cloud computing technology is gaining ground and popularity locally. Technology adoption studies, which include Cloud computing adoption, have mainly been carried out in United State of America, Europe, Japan and Australia. No previous study has analyzed the acceptance and use of cloud computing services in a university setting in Kenya. In addition, no model has been advanced to explain the factors that influence acceptance and use of cloud services in the same setting. A conceptual model derived from the Unified Theory of Acceptance and Use of Technology (UTAUT) was used as a guide in this study. Survey (n=217) and Focus Group Discussion (n=12) were used as data collection instruments in an attempt to understand cloud services adoption and use. The results of partial correlation showed that Performance Expectancy and Facilitating Condition were the two main factors that significantly influence cloud services acceptance and use in the universities in Kenya. The Focus Group Discussion results established that personal ego was a factor that prevented individuals from admitting that they were socially influenced towards adoption and use of cloud services. The findings will be useful to multiple stakeholders that include; academic researchers, technology adoption and perception researchers and cloud services providers and vendors.

Cloud Computing in Library

2014 ◽  
Vol 3 ◽  
pp. 94-112
Author(s):  
Angelė Pečeliūnaitė
Keyword(s):  
Cloud Computing ◽  
Scientific Community ◽  
Digital Age ◽  
International Experience ◽  
The Internet ◽  
Library Services ◽  
General Activity ◽  
Computing Services ◽  
Cloud Computing Services

The article analyses the possibility of how Cloud Computing can be used by libraries to organise activities online. In order to achieve a uniform understanding of the essence of technology SaaS, IaaS, and PaaS, the article discusses the Cloud Computing services, which can be used for the relocation of libraries to the Internet. The improvement of the general activity of libraries in the digital age, the analysis of the international experience in the libraries are examples. Also the article discusses the results of a survey of the Lithuanian scientific community that confirms that 90% of the scientific community is in the interest of getting full access to e-publications online. It is concluded that the decrease in funding for libraries, Cloud Computing can be an economically beneficial step, expanding the library services and improving their quality.

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