Patent ID: 7449797

Claim:
A storage system, comprising: a casing; a control part, which is disposed in the casing; a power supply part, which is disposed in the casing; a first type of load devices, each of which is disposed in the casing, and which has an interface for notifying environment information to the control part, and two in-device power supply parts made redundant for each other; a second type of load devices, each of which is disposed in the casing, and which has two in-device power supply parts made redundant for each other; and a first power distribution unit and a second power distribution unit, which are detachably disposed in the casing, and which distribute power from the power supply part to the respective load devices, wherein at least one the power distribution units comprises: a plurality of power supply ports each for delivering power to a corresponding one of the load devices; a detection part, which detects states of the power being delivered to the load devices from the power supply ports, and which outputs states of the power being delivered to the load devices from the power supply ports; and a monitoring part, which detects a power abnormality of the load devices by monitoring the detection signals outputted from the detection part, and notifies the control part, and wherein the control part, using management information in which corresponding relationship between the load devices and the power supply ports is set beforehand, specifies the load device in which the power abnormality caused by a failure occurs in he load device has been detected, and outputs information related to the specified load device, and specifies a prescribed power distribution unit which is connected the specified load device, and outputs alert information for restricting operations to the specified prescribed power distribution unit from being suspended.