The failure of a data center liquid cooling system can result in a rapid temperature rise in electronic components that may either damage a component, result in the loss of data housed within the component, or both. A supplemental liquid cooling system is placed within each rack serviced by a data center cooling system to mitigate such a failure. Coolant flow is monitored to determine whether the data center liquid cooling system has, for a particular rack, failed. Upon determination of failure, the supplemental liquid cooling system is initiated to reduce the thermal rise of the electronic components within the rack allowing them to conduct an organized and complete shutdown.