The Physical Cloud

Episode 8, layer 8: Data halls

Data halls

The fence. The power. The cooling. The fire systems. The fiber. Every layer we've walked through leads to these rooms. So what actually happens in here?

Coming Sunday 22 November 2026Subscribe on YouTube

TPC is a fictional campus, rendered in Unreal Engine 5. Some 3D assets are made with the help of AI tools, and the narration uses an AI clone of Rick's own voice.

Layer 8 of 8: Data halls

1 Perimeter2 Entrance3 Operations4 Power5 Cooling6 Fire and life safety7 Connections8 Data halls

In this episode

Rows of racks with cold and hot aisles, and TPC's two kinds of hall: a raised-floor hall and a solid-floor hall with hot-aisle chimneys. What sits inside a rack, and why empty spaces get blanking panels. The two power strips at the back of a rack, fed from separate A and B paths, and fiber links organized into A and B paths overhead. The room it takes to work safely, and who gets in. This is the last layer of the first pass, from the fence to the rack.

Three things to take away

  • Racks breathe in cool air at the front and push warm air out the back.
  • Blanking panels block a shortcut for warm air back to the front of the rack.
  • Many servers have two power supplies, one on each of two separate power paths, so work on one path doesn't have to switch them off.

Who works here

The Careers Guide shows how people get into each job.

Sources

Each source is listed with the claim it supports.