Patent ID: 8176208

Claim:
A storage system comprising: a plurality of storage apparatuses, each including one or more channel substrates that receive a data I/O request sent from an external apparatus, one or more drive substrates that write data into a storage device configured of a plurality of storage drives or that read data from the storage device, a cache memory that stores write data to be written into the storage device or read data read from the storage device, a processor substrate that is responsible for data transfer performed between at least any of the channel substrate, the drive substrate, and the cache memory, a sub-service processor that has an environment monitor unit to acquire operation state information that is information indicative of an operational state and a service processor monitoring unit to monitor a service processor, the sub-service processor being communicatively coupled to the processor substrate, a service processor including, a communication control unit communicatively coupled via a communication network to the respective processor substrates of the storage apparatuses, and a power control unit communicatively coupled via a communication line to the sub-service processor, the power control unit powering off or on the service processor according to a control signal sent from the service processor monitoring unit via the communication line, the service processor managing the plurality of the storage apparatuses, wherein the sub-service processor includes an address setting unit that is a user interface for setting a fourth octet of an IP address designated to the processor substrate in the communication network and generates the fourth octet based on a set value of the address setting unit, wherein the processor substrate acquires the fourth octet from the sub-service processor and transmits the acquired fourth octet to the service processor, wherein the service processor generates an IP address using the fourth octet as a fourth octet and transmits the generated IP address to the processor substrate, and wherein the processor substrate receives the IP address and sets the received IP address as the network address of the processor substrate in the communication network.