https://www.datacenterdynamics.com/en/opinions/ovhclouds-dat...

Wooden floors contributed to the fire, they were fire resistant but that only lasts so long. Fire-doors are often the same type of wood.

this was 5 years ago. There were many threads on it on HN that may be of interest to you

https://hn.algolia.com/?dateRange=all&page=0&prefix=true&que...

This is in baguette but with many pictures: https://lafibre.info/ovh-datacenter/incendie-sur-un-site-ovh...