Abstract: The supply of power to a storage apparatus can be made redundant by means of power inputs from two types of power supply, namely an AC power supply and a DC power supply. The storage apparatus comprises a power supply unit for supplying power to a plurality of storage devices, and a power supply controller for controlling a method of supplying power from the power supply unit, wherein the power supply unit makes redundant the power supplied from a first power supply device which supplies AC power and/or from a second power supply device which supplies DC power, and supplies this power to the plurality of storage devices, and wherein, in response to an operator configuration input, the power supply controller supplies power from the first power supply device to one storage device among the plurality of storage devices and supplies power from the second power supply device to another storage device.

Abstract: An object is to improve reliability and availability of a storage system. A single service processor (SVP 20) manages a plurality of storage apparatuses 10. The storage apparatus 10 includes a channel substrate 11, a drive substrate 13, a cache memory 14, and a processor substrate 12 as well as a sub-service processor (SSVP 18) that has an environment monitor unit 181 acquiring operation state information and a service processor monitoring unit (SVP monitoring unit 182) monitoring a SVP 20 and that is coupled to the processor substrate 12. The SVP 20 includes a communication control unit 203 coupled via a communication network 52 to the respective processor substrates 12 of the storage apparatuses 10 and a power control unit 205 coupled via a communication line to the SSVP 18 and powering off or on the SVP 20 according to a control signal sent from the SVP monitoring unit 182 via the communication line 55.

Abstract: An object is to improve reliability and availability of a storage system. A single service processor (SVP 20) manages a plurality of storage apparatuses 10. The storage apparatus 10 includes a channel substrate 11, a drive substrate 13, a cache memory 14, and a processor substrate 12 as well as a sub-service processor (SSVP 18) that has an environment monitor unit 181 acquiring operation state information and a service processor monitoring unit (SVP monitoring unit 182) monitoring a SVP 20 and that is coupled to the processor substrate 12. The SVP 20 includes a communication control unit 203 coupled via a communication network 52 to the respective processor substrates 12 of the storage apparatuses 10 and a power control unit 205 coupled via a communication line to the SSVP 18 and powering off or on the SVP 20 according to a control signal sent from the SVP monitoring unit 182 via the communication line 55.