HyScaleII: A high performance hybrid optical network architecture for data centers

Saha, Shivashis; Deogun, Jitender S.; Xu, Lisong

doi:10.1109/sarnof.2012.6222725

Cited by 11 publications

(8 citation statements)

References 22 publications

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“…EPS already started to become a bottleneck in large scale DCNs, especially with the increasing demand for high-speed, high-bandwidth links. With the recent progress in optical technologies [108]- [110], Optical Burst Switching (OBS) has been propagated as a good candidate for burst communications in data-intensive cloud applications [4], [33], [41], [111]- [116]. The use of OBS technologies in DCNs, however, has not yet received much attention.…”

Section: Proposed Classification Of Dcn Architecturesmentioning

confidence: 99%

“…Recent real world DCN traffic traces show that more than 95% of the data are being transferred by the top 10% largest flows [33]. Thus, oversubscribed DCN with interconnects that can support elephant flows (i.e., flows with large amount of data) may be more favorable than over-provisioned DCNs that guarantee full bisection bandwidth between large number of pairs of servers across the DCN [33], [34].…”

mentioning

confidence: 99%

“…Thus, oversubscribed DCN with interconnects that can support elephant flows (i.e., flows with large amount of data) may be more favorable than over-provisioned DCNs that guarantee full bisection bandwidth between large number of pairs of servers across the DCN [33], [34]. This motivated the researchers to investigate the feasibility of establishing wired or wireless on-demand links to support elephant flows in oversubscribed DCNs as a different approach to tackle the hotspot problem [7].…”

mentioning

confidence: 99%

“…However, electrical interconnects used by most existing DCNs are increasingly becoming a bottleneck as using optical fiber cables requires opticalelectrical-optical (O-E-O) conversion at every port of the interconnect [33]. Therefore, researchers started to investigate the use of optical interconnects in DCNs developing hybrid wired (electrical + optical) DCNs [34]- [38].…”

mentioning

confidence: 99%

“…Therefore, researchers started to investigate the use of optical interconnects in DCNs developing hybrid wired (electrical + optical) DCNs [34]- [38]. Similar to electrical switches, hybrid DCNs can be hierarchical tree-based switchcentric (e.g., HyPaC [39], Helios [40], and Proteus [34]), or recursively defined server-centric (e.g., HyScale [33], [41]). …”

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confidence: 99%

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Wireless Communication in Data Centers: A Survey

Hamza

Deogun

Alexander

2016

IEEE Commun. Surv. Tutorials

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109

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Abstract-Data centers (DCs) is becoming increasingly an integral part of the computing infrastructures of most enterprises. Therefore, the concept of DC networks (DCNs) is receiving an increased attention in the network research community. Most DCNs deployed today can be classified as wired DCNs as copper and optical fiber cables are used for intra-and inter-rack connections in the network. Despite recent advances, wired DCNs face two inevitable problems; cabling complexity and hotspots.To address these problems, recent research works suggest the incorporation of wireless communication technology into DCNs. Wireless links can be used to either augment conventional wired DCNs, or to realize a pure wireless DCN. As the design spectrum of DCs broadens, so does the need for a clear classification to differentiate various design options. In this paper, we analyze the free space optical (FSO) communication and the 60 GHz radio frequency (RF), the two key candidate technologies for implementing wireless links in DCNs. We present a generic classification scheme that can be used to classify current and future DCNs based on the communication technology used in the network. The proposed classification is then used to review and summarize major research in this area. We also discuss open questions and future research directions in the area of wireless DCs.Index Terms-Wireless data centers, 60 GHz, free space optical (FSO), optical wireless communication (OWC), data centers, data center network.

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Section: Proposed Classification Of Dcn Architecturesmentioning

confidence: 99%

mentioning

confidence: 99%

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confidence: 99%

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confidence: 99%

mentioning

confidence: 99%

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Wireless Communication in Data Centers: A Survey

Hamza

Deogun

Alexander

2016

IEEE Commun. Surv. Tutorials

Self Cite

109

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Optical packet switch with energy-efficient hybrid optical/electronic buffering for data center and HPC networks

2015

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Design and analysis of hybrid optical and electronic buffer based optical packet switch

Singh

Tiwari²,

Srivastava³

2018

Sādhanā

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Optical packet switching has the potential to be used as next generation data transfer technology. This paper, introduces an Arrayed Waveguide Gratings (AWG) switch where hybrid buffer (electronic ? optical) is used for the buffering of contending packets. Power budget analysis has been carried out under various switch designs. Comparison of optical and electronic buffering is done in terms of power required for the correct operation of the switch. Energy consumption per bit is also evaluated for both optical and electronic buffers for various buffering time ranges from nano-seconds to milliseconds. In the switch analysis it has been found that, amplified switch requires five times less power, in comparison to un-amplified switch for correct operation. Energy consumption analysis reveals that for shorter duration storage, optical buffer would be a better choice.

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HyScaleII: A high performance hybrid optical network architecture for data centers

Cited by 11 publications

References 22 publications

Wireless Communication in Data Centers: A Survey

Wireless Communication in Data Centers: A Survey

Optical packet switch with energy-efficient hybrid optical/electronic buffering for data center and HPC networks

Design and analysis of hybrid optical and electronic buffer based optical packet switch

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