| 摘要 |
An object of the present invention is to improve safety. A disk array apparatus of the present invention includes: CHE and MEM for temporarily storing data which is transmitted/received between a host device and a disk enclosure; CPU, RAIDC, and NVMC for controlling transmission/reception of data; power supply units for supplying power, which is supplied from an external power supply, to disk array control units; batteries for supplying power to the disk array control unit when the power being supplied from the external power supply is shut OFF without executing power supply shut down processing; an insertion/extraction detection unit for detecting insertion/extraction of a connector used for connecting the disk array control unit with the power supply unit; and battery monitors for stopping power supply by the battery when extraction of the connector is detected while the battery is supplying power to each device of the disk array control unit.
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