Networks Europe Issue 19 January/February 2019 - Page 26

26 NETWORKING Cloud vs Enterprise By Leviton Data centre networks need cabling systems that are future-proof and that can be upgraded with ease Data centre networks Data centres are rapidly evolving to address rising volumes of network traffic. Faced with demands for higher bandwidth and the need to adapt and scale quickly, many organisations with small or medium data centres have moved to cloud service providers or have outsourced to colocation facilities. Also, many large enterprise data centres with traditional three-tier architectures are moving to ‘flatter’ leaf-spine architectures, creating lower latency and more scalable designs. As these data centres adapt, one trend is clear: while both cloud data centres and enterprise data centres invest heavily in next-generation network infrastructure, they follow diverging migration paths, as they deploy different types of optics, network speeds, services and cabling systems. Trends in network speeds Today, while 10Gb/s transceiver modules make up a large portion of the market, 100Gb/s is starting to make a big move, driven largely by cloud environments. Through 2018, eight speeds became available on the market, including 200 and 400Gb/s, creating an unprecedented number of options for data centre managers to evaluate and design their networks to support. Focusing on transceiver trends at 25Gb/s or faster, Figure 1 shows how 40Gb/s adoption will begin to flatten in the next two years. Interestingly, 25Gb/s transceiver shipments will grow parallel with 100Gb/s.