A false smoke alarm almost drowned Jane Street's only NYC datacenter

Jane Street's New York data center triggered a smoke alarm due to dust from contractor construction, causing the cooling system's CRAC units to shut down, putting the fully pressurized but not sprinkled fire sprinkler system at risk of being triggered by high temperatures. The team members of the system returned in an emergency and unplugged the power cords of all equipment in the computer room before the alarm sounded, avoiding the data center from being flooded with water due to overheating.