Redundant system, control apparatus, and control method
First Claim
1. A redundant system comprising:
- a first apparatus arranged in a redundant configuration with a second apparatus; and
a control unit that controls a power supply unit that supplies power to the first apparatus, wherein the control unit is not redundant with the first apparatus or the second apparatus, wherein;
the first apparatus includes a state management unit that manages operational state information indicating an operational state of the first 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 first 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 first 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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Accused Products
Abstract
A redundant system includes a redundant apparatus and a control unit that controls power supplied to the redundant apparatus. The redundant apparatus includes a state management unit that manages an operational state of the redundant apparatus, and a response unit that returns the operational state to the control unit. The control unit includes a first requesting unit that requests a redundant apparatus that operates as an operation system for the operational state information, a first determination unit that determines whether the response to the request is returned within a predetermined time, a second determination unit that determines whether the operational state is normal if the response is returned within the predetermined time, and a shutdown unit that shuts down the power supply to the redundant apparatus, if the second determination unit determines that the operational state is not normal.
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Citations
19 Claims
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1. A redundant system comprising:
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a first apparatus arranged in a redundant configuration with a second apparatus; and a control unit that controls a power supply unit that supplies power to the first apparatus, wherein the control unit is not redundant with the first apparatus or the second apparatus, wherein; the first apparatus includes a state management unit that manages operational state information indicating an operational state of the first 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, and the control unit includes a first requesting unit that requests the first 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 first 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. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A control apparatus that controls a power supply unit that supplies power to a first apparatus arranged in a redundant configuration with a second apparatus, the control apparatus comprising:
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a first requesting unit that requests the first apparatus that operates as an operation system for operational state information indicating an operational state of the redundant system; a first determination unit that determines whether a response 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 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 first 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, wherein the control apparatus is not redundant with the first apparatus or the second apparatus. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A control method implemented by a control apparatus for controlling a power supply unit that supplies power to a first apparatus in a redundant configuration with a second apparatus, the method comprising:
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a first requesting procedure for requesting the first apparatus that operates as an operation system for operational state information indicating an operational state of the first apparatus; a first determination procedure for determining whether a response to the request in the first requesting procedure is returned within a predetermined time; a second determination procedure for determining whether an operational state indicated by the operational state information as the response to the request is normal if it is determined in the first determination procedure that the response to the request in the first requesting procedure is returned within the predetermined time; and a shutdown procedure for shutting down the power supply to the first apparatus, to which the operational state information is requested in the first requesting procedure, if it is determined in the second determination procedure that the operational state indicated by the operational state information as the response to the request in the first requesting procedure is not normal, wherein the control apparatus is not redundant with the first apparatus or the second apparatus. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification