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Posts Tagged 'networking in data centers'

• January 12, 2026

  

  

  

  Active Copper Cables: A New Class of Rack Interconnects for Further Optimizing AI

  By Nicola Bramante, Senior Principal Engineer, Connectivity Marketing, ´óÐãÖ±²¥

  The exponential growth in AI workloads drives new requirements for connectivity in terms of data rate, associated bandwidth and distance, especially for scale-up applications. With direct attach copper (DAC) cables reaching their limits in terms of bandwidth and distance, a new class of cables, active copper cables (ACCs), are coming to market for short-reach links within a data center rack and between racks. Designed for connections up to 2 to 2.5 meters long, ACCs can transmit signals further than traditional passive DAC cables in the 200G/lane fabrics hyperscalers will soon deploy in their rack infrastructures.

  At the same time, a 1.6T ACC consumes a relatively miniscule 2.5 watts of power and can be built around fewer and less sophisticated components than longer active electrical cables (AECs) or active optical cables (AOCs). The combination of features gives ACCs a peak mix of bandwidth, power, and cost for server-to-server or server-to-switch connections within the same rack.

  ´óÐãÖ±²¥ announced its first?ACC linear equalizers for producing ACC cables?last month.?

  Inside the Cable

  ACCs effectively integrate technology originally developed for the optical realm into copper cables. The idea is to use optical technologies to extend bandwidth, distance and performance while taking advantage of copper¡¯s economics and reliability. Where these ACCs differ is in the components added to them and the way they leverage the technological capabilities of a switch or other device to which they are connected.

  ACCs include an equalizer that boosts signals received from the opposite end of the connection. As analog devices, ACC equalizers are relatively inexpensive compared to digital alternatives, consume minimal power and add very little latency.

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• February 14, 2023

  

  

  

  The Three Things Next-Generation Data Centers Need from Networking

  By Amit Sanyal, Senior Director, Product Marketing, ´óÐãÖ±²¥

  Data centers are arguably the most important buildings in the world. Virtually everything we do¡ªfrom ordinary business transactions to keeping in touch with relatives and friends¡ªis accomplished, or at least assisted, by racks of equipment in large, low-slung facilities.

  And whether they know it or not, your family and friends are causing data center operators to spend more money. But it¡¯s for a good cause: it allows your family and friends (and you) to continue their voracious consumption, purchasing and sharing of every kind of content¡ªvia the cloud.

  Of course, it¡¯s not only the personal habits of your family and friends that are causing operators to spend. The enterprise is equally responsible. They¡¯re collecting data like never before, storing it in data lakes and applying analytics and machine learning tools¡ªboth to improve user experience, via recommendations, for example, and to process and analyze that data for economic gain. This is on top of the relentless, expanding adoption of cloud services.

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