Data centres are provided with fire suppression and detection measures to protect critical data and against business interruption. At least part of the protection may be provided by a gas extinguishing or water sprinkler/water mist systems. The consideration of a particular type of system has historically been determined by specialist consultants, who in turn have been influenced by manufacturers and their own experience. Regular builders and owners of data centres have often implemented their own measures, some of which have been imported from the other countries, particularly the US.

This article provides a brief summary of the alternative technologies and compares the relative merits, costs, and environmental influences.