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REDUNDANT SYSTEM, CONTROL APPARATUS, AND CONTROL METHOD

  • US 20100218032A1
  • Filed: 01/06/2010
  • Published: 08/26/2010
  • Est. Priority Date: 02/25/2009
  • Status: Active Grant
First Claim
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1. A redundant system comprising:

  • a redundant apparatus in a redundant configuration; and

    a control unit that controls a power supply unit that supplies power to the redundant apparatus, wherein;

    the redundant apparatus includes a state management unit that manages operational state information indicating an operational state of the redundant apparatus, and a response unit that returns the operational state information managed by the state management unit to the control unit in response to a request of the operational state information by the control unit, andthe control unit includes a first requesting unit that requests the redundant apparatus that operates as an operation system for the operational state information, a first determination unit that determines whether the response by the response unit to the request by the first requesting unit is returned within a predetermined time, a second determination unit that determines whether the operational state indicated by the operational state information as the response to the request by the first requesting unit is normal if the first determination unit determines that the response to the request by the first requesting unit is returned within the predetermined time, and a shutdown unit that shuts down the power supply to the redundant apparatus, to which the first requesting unit has requested for the operational state information, if the second determination unit determines that the operational state indicated by the operational state information as the response to the request by the first requesting unit is not normal.

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