Fires in a server room or datacentre are a risk that can be mitigated against by installing a suitable suppression system and testing the room’s integrity. The aim of the testing is to ensure that a sufficient level of the fire suppression agent or gas is retained for a long enough period to extinguish the fire and prevent reignition. Fire suppression systems and their components are normally subject to annual maintenance by a certified fire engineer. The same should apply to room integrity testing and some organisations may be obliged to do so.