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The 60GHz wireless technology that is now emerging has the potential to provide dense and extremely fast connectivity at low cost. In this paper, the authors explore its use to relieve hotspots in oversubscribed Data Center (DC) networks. By experimenting with prototype equipment, they show that the DC environment is well suited to a deployment of 60GHz links contrary to concerns about interference and link reliability. Using directional antennas, many wireless links can run concurrently at multi-Gbps rates on Top-of-Rack (ToR) switches. The wired DC network can be used to sidestep several common wireless problems.
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