Protocol for communication between a plurality of liquid cooling modules for computer servers

Method of communication between a plurality of liquid cooling modules (4, 5, 6) of a cooling system for one or more computer servers (3), wherein:

• the cooling modules (4, 5, 6) communicate with each other in a manner that operates in N+1 redundancy where N is greater than or equal to 2, so as to enable a standard replacement of any one of these cooling modules (4, 5, 6) without stopping the cooling and without stopping the operation of the server or servers (3),
• this communication is ensured by a collaborative protocol without master/slave,
• before switching (35) from an active mode (16, 17) in which cooling is performed to a backup mode (20) in which cooling is no longer performed, the redundant cooling module (6) must verify beforehand (33) that a data set is consistent across all these cooling modules (4, 5, 6) and that this consistency is maintained for a predetermined duration.