Multiple server in-rush current reduction
First Claim
Patent Images
1. In a rack-mounted server system having a plurality of servers therein, a method comprising:
- restoring the plurality of servers to an operational state automatically after a loss of power to the rack-mounted server system; and
delaying, selectively, powering on of a first server by implementing a selectable delay circuit coupled between a super input/output controller and a power supply for a power-on signal within the first server.
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Abstract
The specification discloses a system and related method for delaying the powering-on of a server after loss of power. In this way, each server in a rack of servers may have its power restored at staggered times to minimize in-rush current associated with start-up of the rack-mounted server system.
58 Citations
34 Claims
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1. In a rack-mounted server system having a plurality of servers therein, a method comprising:
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restoring the plurality of servers to an operational state automatically after a loss of power to the rack-mounted server system; and delaying, selectively, powering on of a first server by implementing a selectable delay circuit coupled between a super input/output controller and a power supply for a power-on signal within the first server. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A rack-mounted server system comprising:
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a first sewer mounted in the rack-mounted server system, the first server further composing a super input/output controller having a power-on output signal; a power supply having a power-on input signal, and wherein the power supply turns on in response to assertion of the power-on input signal; and a delay circuit coupling the power-on output signal of the super input/output controller to the power-on input signal of the power supply, and wherein the delay circuit provides an adjustable delay of an asserted state of the power-on output signal; a second server mounted in the rack-mounted server system; and wherein the first and second servers are configured to automatically power-on at different times when power is restored to the rack-mounted server system after loss of power, when the first and second servers were in full operation at the loss of power. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A server for use in a rack-mounted server system comprising:
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a microprocessor; a main memory array; a bridge device coupling the microprocessor and the main memory array; a mass storage device coupled to the bridge device; a controller coupled to the bridge device, and also coupled to a front panel power button, wherein the controller is configured to assert a power-on output signal when the front panel power button is actuated, and wherein the controller is further configured to assert the power-on output signal to bring the server to its prior operational state after a loss of power; a delay circuit coupling the power-on output signal from the controller to a power supply, and wherein the delay circuit is configured to programmably delay an assertion of the power-on output signal to the power supply. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25)
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26. A computer for use as a server in a rack-mounted server system comprising:
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a microprocessor; a main memory array; a bridge device coupling the microprocessor and the main memory array; a mass storage device coupled to the bridge device; a super input/output (super I/O) controller coupled to the bridge device, and also coupled to a front panel power button, wherein the super I/O controller is configured to assert a power-on output signal when the front panel power button is actuated, and wherein the super I/O controller is further configured to assert the power-on output signal to bring the server to its prior operational state after a loss of power; a means for selectively delaying an assertion of the power-on output signal to a power supply, the means for selectively delaying coupling the power-on output signal from the super I/O controller to the power supply. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34)
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Specification