DC4 in Paris was not destroyed or “shut down” in a dramatic way; it was Online/Iliad’s Paris 15th data center built inside a former nuclear fallout shelter and later expanded as part of the company’s Paris infrastructure. Public sources describe it as a bunker at 58 Boulevard Lefebvre that was acquired by Iliad/Online, rehabilitated into DC4, and later used as an availability zone / data center site under the Scaleway umbrella.

What happened

  • The site started as the Abri Lefebvre , a Cold War-era shelter in Paris.
  • Iliad’s hosting arm, Online, acquired it and turned it into DC4 , a highly secure data center.
  • Scaleway later described the site as part of its Paris multi-AZ region and said it first deployed C14 cold storage there in 2016.
  • The available public information points to continued transformation and expansion , not a single incident that “happened to” the servers.

Why people ask about it

There seems to be some confusion online because “DC4” can refer to different things, and some forum posts discuss outages or rumors about Paris data centers in general rather than this specific site.

For the Paris DC4 location itself, the clearest public record is that it became a data center, then evolved within Scaleway’s Paris infrastructure.

Public record

Topic| What public sources say
---|---
Site origin| Former fallout shelter / bunker in Paris 15. 13
Operator| Iliad / Online, later Scaleway context. 12
DC4 role| Data center / cold storage / availability zone asset. 110
Notable status| Expanded and upgraded, not publicly reported as permanently lost or demolished. 19

Bottom line

The most supported answer is that DC4 in Paris was converted from an old bunker into a data center and then integrated into Scaleway’s Paris infrastructure ; I found no reliable indication of a sudden catastrophic event involving the servers themselves.