Fire suppression system and method

A fire suppression system comprising:

• at least one first gas source containing an inert gas;
• at least one second gas source containing an organic halide gas;
• a distribution network connected with the at least one first gas source and the at least one second gas source to distribute the inert gas and the organic halide gas, the distribution network including,
• a common manifold,
• input lines respectively connecting the at least one first gas source with the common manifold and the at least one second gas source with the common manifold,
• output lines respectively leading from the common manifold to a plurality of compartments, and
• flow control devices configured to control flow of the inert gas and the organic halide gas;
• and
• a controller in communication with the distribution network, the controller configured to independently distribute the inert gas to each one of the compartments responsive to a fire threat signal corresponding to a fire threat in each one of the compartments and configured to determine whether, and at what flow rate, to additionally distribute the organic halide gas to the compartment with the fire threat based upon a compartment size of the compartment with the fire threat.