Fire suppression systems, and fire prevention mechanisms, are no joke in a data center.
Plenty of systems that displace oxygen in the room to prevent combustion.
Many places won't let you even bring combustable materials into the data center spaces. Receiving department unboxes and puts cardboard right into the baler. Wanna store stuff in your cage? Better be in a tote.
Also, humidity is strictly controlled to prevent static buildup.
The most likely place for a fire to break out in a data center would be from battery backup systems. But at the scale that most large facilities have, there is a dedicated battery room, or they use something else for instantaneous load transfer, like flywheels.
I recently had a tour of the Redmond campus. They have multiple geothermal wells for power as well as an air conditioning system that uses almost no energy, it was pretty neat.
Clients looking to rent data center space still like to see pretty spaces in their giant concrete boxes. So on a campus there is usually one of the builds that has something prettier for the front admin section.
But square footage is money, so it's much smaller.
They actually go for LEED certification for their spaces a lot of times. So they get an energy efficiency badge for a building that uses the total power of a ~3500 homes (in the builds I have seen) 24/7/365.
I mean, that's the mechanism by which carbon is removed. It goes into tree, tree dies or gets cut down taking all the solidified carbon with it, new tree gets planted in its place to repeat the cycle. In fact, the fastest way to scrub carbon with the practice is to farm trees, assuming you do it sustainably.
If memory serves right, one of Germany's datacenters went up in flames a few years ago because they had wooden flooring and no adequate fire suppression systems.
EDIT: it was in France, and Europe's biggest datacenter.