Google, TCS, and the physics of air-cooling a large data centre | Explained
Google and TCS are planning 1-GW data centers in Visakhapatnam that will utilize air-cooling technology to manage the massive heat generated by their server clusters. While this method reduces water consumption, it presents unique engineering challenges in heat dissipation for high-density computing facilities.
Why it matters
As data centers grow in scale, the environmental impact of cooling and energy consumption becomes a major infrastructure and sustainability concern.
The story so far: Following sustained local protests and pressure from civil society groups, Google has reportedly said its planned 1-GW data centre in Visakhapatnam district will use air-cooling technology to cool its servers. While air-cooling requires less water, it comes with its own trade-offs.
A large data centre will have several million processors, each with billions of transistors. Each transistor manipulates the electrical current flowing through it to perform operations on data. As it does, the resistance the transistor’s material poses to the flow of current will release some heat, as will the charging and discharging of transistors. Across trillions of transistors, the amount of heat thus generated can be considerable.
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