FireFly: Reconfigurable optical wireless networking data centers

Mohsen Kavehrad, Peng Deng, H. Gupta, J. Longtin, S. R. Das, V. Sekar

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

We explore a novel, free-space optics based approach for building data center interconnects. Data centers (DCs) are a critical piece of today's networked applications in both private and public sectors. The key factors that have driven this trend are economies of scale, reduced management costs, better utilization of hardware via statistical multiplexing, and the ability to elastically scale applications in response to changing workload patterns. A robust DC network fabric is fundamental to the success of DCs and to ensure that the network does not become a bottleneck for high-performance applications. In this context, DC network design must satisfy several goals: high performance (e.g., high throughput and low latency), low equipment and management cost, robustness to dynamic traffic patterns, incremental expandability to add new servers or racks, and other practical concerns such as cabling complexity, and power and cooling costs. Current DC network architectures do not seem to provide a satisfactory solution, with respect to the above requirements. In particular, traditional static (wired) networks are either overprovisioned or oversubscribed. Recent works have tried to overcome the above limitations by augmenting a static (wired) "core" with some flexible links (RF-wireless or optical). These augmented architectures show promise, but offer only incremental improvement in performance. Specifically, RFwireless based augmented solutions also offer only limited performance improvement, due to inherent interference and range constraints of RF links. This paper explores an alternative design point - a fully flexible and all-wireless DC interrack network based on free-space optical (FSO) links. We call this FireFly as in; Free-space optical Inter-Rack nEtwork with high FLexibilitY. We will present our designs and tests using various configurations that can help the performance and reliability of the FSO links.

Original languageEnglish (US)
Title of host publicationBroadband Access Communication Technologies XI
EditorsSpiros Mikroulis, Benjamin B. Dingel, Katsutoshi Tsukamoto
PublisherSPIE
ISBN (Electronic)9781510606975
DOIs
StatePublished - Jan 1 2017
EventPhotonics West OPTO 2017 Conference on Broadband Access Communication Technologies XI - San Francisco, United States
Duration: Jan 31 2017Feb 1 2017

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume10128
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Other

OtherPhotonics West OPTO 2017 Conference on Broadband Access Communication Technologies XI
CountryUnited States
CitySan Francisco
Period1/31/172/1/17

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All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

Kavehrad, M., Deng, P., Gupta, H., Longtin, J., Das, S. R., & Sekar, V. (2017). FireFly: Reconfigurable optical wireless networking data centers. In S. Mikroulis, B. B. Dingel, & K. Tsukamoto (Eds.), Broadband Access Communication Technologies XI [1012804] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 10128). SPIE. https://doi.org/10.1117/12.2250637