A technique for increasing rewriting current without increasing a power supply voltage and also reducing location dependency inside a memory array of a resistive state after the rewriting is provided in a resistance change memory in which the resistance value of a memory cell changes between logical values "1" and "0". In the resistance change memory, bit lines are formed into a layered structure, the bit line select switches for connecting to the global bit line are provided at both ends of the local bit line, and a control method of the bit line select switches is changed in the writing and the reading, thereby realizing the optimum array configurations for each of them. More specifically, in the writing and the reading, two current paths are provided in parallel by turning ON the bit line select switches simultaneously.

Provided is a storage system capable of simply and promptly changing the operation of a storage subsystem as a stand-alone system and the operation of a storage subsystem as a virtual storage system. This storage system is able to set a first mode that operates as a stand-alone system and a second mode that operates as a virtual storage system from a management apparatus to each of the multiple storage subsystems.

Proposed are a storage system, data processing method and storage apparatus capable of performing stable data I/O processing. Each of the storage apparatuses configured in the storage group stores group configuration information containing priority information given to each storage apparatus, and the storage apparatus with the highest priority becomes a master and performs virtualization processing and data I/O processing, and another storage apparatus belonging to this storage group performs internal processing of the storage group.

An electronic equipment includes a cooling system using boiling and condensation of a refrigerant, especially stabilizes the cooling performance, and reduces the influence which vibration accompanying phase change of boiling and condensation gives to the electronic equipment. Electronic equipment includes a cooling system including a cooling part which cools heat generating from a heat generator such as a heat generating component by using boiling of a refrigerant and is thermally connected to the heat generator such as the heat generating element, a heat radiation part which radiates heat absorbed by the refrigerant in the cooling part by condensation, a refrigerant drive part for delivering the condensed refrigerant to the cooling part again, and piping which fluidly connects them, and the electronic equipment includes preliminary heating means for heating the refrigerant, which flows to the cooling part from the refrigerant drive part, between the refrigerant drive part and the cooling part.

As an electronic device cooling apparatus which allows refrigerant liquid to circulate and flow in a cooling system by using a pump so as to cool a heat generating portion of an electronic device, a heat generating portion cooling unit which is connected to the pump, which receives heat from the heat generating portion of the electronic device, and which releases the heat to the refrigerant liquid through a fin portion so as to cool the heat generating portion includes independently therein a first flow channel through which the refrigerant liquid discharged from a discharging port of the pump is drawn in to be guided to the outside of the heat generating portion cooling unit through the fin portion, and a second flow channel through which the refrigerant liquid cooled at the outside is drawn in to be guided towards a sucking port of the pump.