This is typically a FM200 system in the datacenter [1] which is a pressurized gas. There are also often water "dry-pipes" in place that can pressurize if the F

This is typically a FM200 system in the datacenter [1] which is a pressurized gas. There are also often water "dry-pipes" in place that can pressurize if the FM200 fails. Fire suppression codes vary by country. [1] - https://en.wikipedia.org/wiki/Automatic_fire_suppression https://en.wikipedia.org/wiki/Automatic_fire_suppression