What's Actually Inside a Modern AI Data Center Rack

I came across this infographic and spent more time than I expected just reading through it. It’s a good snapshot of how much the anatomy of a server rack has shifted in the last few years. A rack used to be mostly about compute and storage. CPUs on top, drives somewhere in the middle, some networking at the top, and air blowing through the whole thing. The job of the infrastructure was to stay out of the way of the workload. Now the workload is the infrastructure. GPUs are the centre of gravity, and everything else, power distribution, cooling, interconnects, cable management, is designed around keeping them fed and cold enough to run flat out. ...

April 25, 2026 · 2 min · 258 words · bjr