Computer cabinet comprising: - at least one server can be mounted on a frame, with the server that can be mounted on a frame being passed through by a cooling circuit, with the cooling circuit being travelled through by a coolant, the cooling circuit comprising an inlet and an outlet; - means of supplying the cooling circuit with coolant, with the means of supplying comprising: - two cooling modules (14a, 14b), with each cooling module (14a, 14b) comprising: ∘ A primary hydraulic circuit (21a, 21b) comprising an outlet able to be connected to the inlet of a client hydraulic network and an inlet able to be connected to the outlet of the client hydraulic network; ∘ A secondary hydraulic circuit (15a, 15b) comprising an outlet (19a, 19b) connected to the inlet of the cooling circuit and an inlet (18a, 18b) connected to the outlet of the cooling circuit of the cabinet ∘ A heat exchanger (20a, 20b) able to cool the coolant passing through the secondary hydraulic circuit (15a, 15b) via dissipation of heat through the primary hydraulic circuit (21a, 21b); ∘ A pump (22a, 22b) able to control the flow rate of the coolant in the secondary hydraulic circuit (15a, 15b); ∘ Controllers (23a, 23b) able to control the pump (22a, 22b); - A central control unit connected to the controllers (23a, 23b) of each one of the cooling modules (14a, 14b); characterised in that the central control unit is able to activate one of the cooling modules (14a, 14b) while the other cooling module (14a, 14b) is inactive, with the secondary hydraulic circuit (15a, 15b) of the active cooling module supplying the cooling circuit in such a way as to keep the coolant at a constant differential pressure between the outlet and the inlet of the cooling module. - at least one server can be mounted on a frame, with the server that can be mounted on a frame being passed through by a cooling circuit, with the cooling circuit being travelled through by a coolant, the cooling circuit comprising an inlet and an outlet; - means of supplying the cooling circuit with coolant, with the means of supplying comprising: - two cooling modules (14a, 14b), with each cooling module (14a, 14b) comprising: ∘ A primary hydraulic circuit (21a, 21b) comprising an outlet able to be connected to the inlet of a client hydraulic network and an inlet able to be connected to the outlet of the client hydraulic network; ∘ A secondary hydraulic circuit (15a, 15b) comprising an outlet (19a, 19b) connected to the inlet of the cooling circuit and an inlet (18a, 18b) connected to the outlet of the cooling circuit of the cabinet ∘ A heat exchanger (20a, 20b) able to cool the coolant passing through the secondary hydraulic circuit (15a, 15b) via dissipation of heat through the primary hydraulic circuit (21a, 21b); ∘ A pump (22a, 22b) able to control the flow rate of the coolant in the secondary hydraulic circuit (15a, 15b); ∘ Controllers (23a, 23b) able to control the pump (22a, 22b); - A central control unit connected to the controllers (23a, 23b) of each one of the cooling modules (14a, 14b); characterised in that the central control unit is able to activate one of the cooling modules (14a, 14b) while the other cooling module (14a, 14b) is inactive, with the secondary hydraulic circuit (15a, 15b) of the active cooling module supplying the cooling circuit in such a way as to keep the coolant at a constant differential pressure between the outlet and the inlet of the cooling module. - two cooling modules (14a, 14b), with each cooling module (14a, 14b) comprising: ∘ A primary hydraulic circuit (21a, 21b) comprising an outlet able to be connected to the inlet of a client hydraulic network and an inlet able to be connected to the outlet of the client hydraulic network; ∘ A secondary hydraulic circuit (15a, 15b) comprising an outlet (19a, 19b) connected to the inlet of the cooling circuit and an inlet (18a, 18b) connected to the outlet of the cooling circuit of the cabinet ∘ A heat exchanger (20a, 20b) able to cool the coolant passing through the secondary hydraulic circuit (15a, 15b) via dissipation of heat through the primary hydraulic circuit (21a, 21b); ∘ A pump (22a, 22b) able to control the flow rate of the coolant in the secondary hydraulic circuit (15a, 15b); ∘ Controllers (23a, 23b) able to control the pump (22a, 22b); ∘ A primary hydraulic circuit (21a, 21b) comprising an outlet able to be connected to the inlet of a client hydraulic network and an inlet able to be connected to the outlet of the client hydraulic network; ∘ A secondary hydraulic circuit (15a, 15b) comprising an outlet (19a, 19b) connected to the inlet of the cooling circuit and an inlet (18a, 18b) connected to the outlet of the cooling circuit of the cabinet ∘ A heat exchanger (20a, 20b) able to cool the coolant passing through the secondary hydraulic circuit (15a, 15b) via dissipation of heat through the primary hydraulic circuit (21a, 21b); ∘ A pump (22a, 22b) able to control the flow rate of the coolant in the secondary hydraulic circuit (15a, 15b); ∘ Controllers (23a, 23b) able to control the pump (22a, 22b); - A central control unit connected to the controllers (23a, 23b) of each one of the cooling modules (14a, 14b);