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On the Feasibility of Optical Circuit Switching for High Performance Computing Systems
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Optical Interconnects in Next Generation Data Centers: An End to End View
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The Green and Virtual Data Center
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Optical Networks: A Practical Perspective, 3rd Edition
Optical Networks: A Practical Perspective, 3rd Edition
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The Datacenter as a Computer: An Introduction to the Design of Warehouse-Scale Machines
The Datacenter as a Computer: An Introduction to the Design of Warehouse-Scale Machines
The nature of data center traffic: measurements & analysis
Proceedings of the 9th ACM SIGCOMM conference on Internet measurement conference
Fiber optic communication technologies: what's needed for datacenter network operations
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c-Through: part-time optics in data centers
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Helios: a hybrid electrical/optical switch architecture for modular data centers
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Proceedings of the 6th ACM/IEEE Symposium on Architectures for Networking and Communications Systems
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IMC '10 Proceedings of the 10th ACM SIGCOMM conference on Internet measurement
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Cloud computing and web emerging applications have created the need for more powerful data centers. These data centers need high bandwidth interconnects that can sustain the high interaction between the web-, application- and database-servers. Data center networks based on electronic packet switches will have to consume excessive power in order to satisfy the required communication bandwidth of future data centers. Optical interconnects have gained attention recently as a promising energy efficient solution offering high throughput, low latency and reduced energy consumption compared to current networks based on commodity switches. This paper presents a comparison on the power consumption of several optical interconnection schemes based on AWGRs, Wavelength Selective Switches (WSS) or Semiconductor Optical Amplifiers (SOAs). Based on a thorough analysis of each architecture, it is shown that optical interconnects can achieve at least an order of magnitude higher energy efficiency compared to current data center networks based on electrical packet based switches and they could contribute to greener IT network infrastructures.