To provide a method capable of integratedly managing logs collected and stored by a plurality of cell nodes due to a single fault in a computer system as one log.

In the computer system with a plurality of cell nodes, when a fault is detected in a component in any cell node, the fault is notified to a management controller in the cell node, the detection of the fault is transferred to the other cell nodes in the computer system, each cell node stores faults detected in its own cell node and the detection of faults transferred from other nodes as local log data, the local log data is transferred to an integrated management controller in the computer system, a fault factor in the local log data to be transferred from each cell node is subsequently estimated on the basis of the transferred local log data, and the local log data is accumulated according to the estimation and stored as global log data into a memory.