CyrusOne Moves to Strengthen Critical Infrastructure After Service Disruption
November 30, 2025
In a move highlighting the critical importance of infrastructure resilience for financial markets, data center operator CyrusOne has completed upgrades to its cooling systems at a major facility in Illinois. This action comes directly in response to a service outage last week that impacted a key tenant, the CME Group, for several hours. Such incidents underscore the immense pressure on data center operators to maintain flawless uptime, especially for clients in the high-stakes financial trading sector where even brief interruptions can have significant market consequences.
According to a report by Bloomberg News, the disruption originated at the CyrusOne CHI1 data center in Aurora, Illinois. Following the incident, which was triggered by a failure in the cooling infrastructure, the company swiftly worked to restore operations. CyrusOne stated that it has "restored stable and secure operations" at the facility. More importantly, the company has now installed additional backup cooling capacity, a measure explicitly designed to enhance system redundancy and prevent a recurrence of the outage that affected the CME Group.
The proactive enhancement of cooling redundancy at the Chicago-area site points to broader industry priorities. As data centers increasingly host essential, latency-sensitive workloads for financial services, cloud providers, and enterprises, the reliability of supporting infrastructure like power and cooling is paramount. This event serves as a reminder for the sector to continuously audit and fortify backup systems, moving beyond base-level design to ensure business continuity for mission-critical applications.
Source: whtc
CyrusOne Bolsters Cooling Redundancy Following Outage at Key Chicago Data Center
