Gartner Research

40G Is Dead — Embrace 100G in Your Data Center!

Published: 26 September 2017

ID: G00331875

Analyst(s): Naresh Singh , Danilo Ciscato


Infrastructure and operations leaders with network architecture responsibility should no longer invest in 40G Ethernet switches for their data center network, as current 100G switches offer a far more appropriate option, both technically and commercially.

Table Of Contents
  • Impacts


Impacts and Recommendations

  • 100G data center switches now cost just slightly more than 40G switches, enabling much bigger and faster price performance improvements and future-proofing to the DC network team
  • Applications such as flash/SSD storage traffic are starting to push 25G I/O beyond large cloud customers into the mainstream, which is driving network architects to look at higher-speed switches in both the ToR/leaf and the spine.

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