Hot-plugging nodes in a modular system having redundant power supplies
First Claim
1. An information handling system, comprising:
- a plurality of power supplies;
at least one hot-pluggable node;
a plurality of power switches for coupling the plurality of power supplies to the at least one hot-pluggable node; and
control logic for controlling the plurality of power switches and detecting the at least one hot-pluggable node, whereinwhen a one of the at least one hot-pluggable node is detected by the control logic,at least one of the plurality of power supplies is isolated from other ones of the plurality of power supplies, andthe isolated at least one of the plurality of power supplies is coupled to the detected one of the at least one hot-pluggable node,whereby when power to the one of the at least one hot-pluggable node has stabilized, the one of the at least one hot-pluggable node is coupled to the other ones of the plurality of power supplies.
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Accused Products
Abstract
Substantial reduction or total elimination of switching transients (glitches) in an information handling system caused by inserting and/or removing hot-pluggable nodes having large power requirements is achieved with a plurality of power supplies having spare power capacity and being configurable into a main power source and an isolated power source. When insertion of a new hot-pluggable node is detected, this newly inserted node is powered from the isolated power source that is not coupled to the other existing operational nodes. When power to the new hot-pluggable node has stabilized and no longer has any detectable transients thereon, the new node is coupled to the main power source which powers the existing nodes of the information handling system. The isolated power source may thereafter be coupled to the main power source for added power supply redundancy. The new node may be detected and made part of or removed from the information handling system without being coupled to the main power source. When an operating node to be removed is detected, all processes to that node are stopped, and the node to be removed is coupled to the isolated power source. After removal of the node, the isolated power source may thereafter be coupled to the main power source for added power supply redundancy.
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Citations
24 Claims
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1. An information handling system, comprising:
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a plurality of power supplies; at least one hot-pluggable node; a plurality of power switches for coupling the plurality of power supplies to the at least one hot-pluggable node; and control logic for controlling the plurality of power switches and detecting the at least one hot-pluggable node, wherein when a one of the at least one hot-pluggable node is detected by the control logic, at least one of the plurality of power supplies is isolated from other ones of the plurality of power supplies, and the isolated at least one of the plurality of power supplies is coupled to the detected one of the at least one hot-pluggable node, whereby when power to the one of the at least one hot-pluggable node has stabilized, the one of the at least one hot-pluggable node is coupled to the other ones of the plurality of power supplies. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An information handling system, comprising:
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a plurality of power supplies; at least one operating hot-pluggable node; a plurality of power switches for coupling the plurality of power supplies to the at least one operating hot-pluggable node; and control logic for controlling the plurality of power switches and detecting removal of the at least one operating hot-pluggable node, wherein when a one of the at least one operating hot-pluggable node is to be removed, all processes running in the at least one operating hot-pluggable node to be removed are stopped, at least one of the plurality of power supplies is isolated from other ones of the plurality of power supplies, and the isolated at least one of the plurality of power supplies is coupled to the one of the at least one hot-pluggable node to be removed. - View Dependent Claims (15, 16)
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17. A method of adding a hot-pluggable node into an information handling system without disturbing existing operational nodes, said method comprising the steps of:
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providing a plurality of power supplies; adding a hot-pluggable node into an information handling system; detecting the added hot-pluggable node; isolating a one of the plurality of power supplies from other ones of the plurality of power supplies; coupling the added hot-pluggable node to the isolated one of the plurality of power supplies; determining when power to the added hot-pluggable node has stabilized; and coupling the added hot-pluggable node to the other ones of the plurality of power supplies after the power has stabilized. - View Dependent Claims (18, 19, 20)
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21. A method of removing a hot-pluggable node in an information handling system without disturbing existing operational nodes, said method comprising the steps of:
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providing a plurality of power supplies; detecting when a one of at least one operating hot-pluggable node is to be removed; stopping all processes running in the detected one to be removed of the at least one operating hot-pluggable node; isolating a one of the plurality of power supplies from other ones of the plurality of power supplies; and coupling the detected one to be removed of the at least one operating hot-pluggable node to the isolated one of the plurality of power supplies. - View Dependent Claims (22, 23, 24)
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Specification