Power Loss Detection Module Thresholding PLD Notifications
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Solution Overview
Problem
Current data processing systems face challenges in differentiating between Power Line Disturbances (PLDs) and actual power loss events, leading to unnecessary system shutdowns and potential data integrity issues due to the lack of differentiation in handling mechanisms and the complexity of power supply systems required for PLD and Early Power Off Warning (EPOW) events.
Innovation Solution
Implementing power loss detection modules that differentiate between PLDs and actual power loss events by monitoring power supply modules, infrastructure, and system characteristics to delay Early Power Off Warning notifications, allowing PLDs to self-correct and ensuring data integrity through tailored notification timing and power management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the system implements mechanisms to support both PLD and EPOW events with sufficient holdup capacitance time, then the system can handle both temporary power disturbances and permanent power outages, but the cost and complexity of the power supply system increases significantly
Solution Approach 1:
The patent segments the power loss detection function into distinct components: a power loss detection module that monitors power conditions, a PLD filter time mechanism that distinguishes between temporary and permanent power loss, and separate handling paths for PLD and EPOW events. This segmentation allows the system to handle both event types without requiring a single complex mechanism, reducing overall system complexity while maintaining reliability
Solution Approach 2:
The patent implements dynamic PLD filter time adjustment based on system configuration and power supply characteristics. The filter time is not fixed but adapts to different scenarios, allowing the system to optimize its response to power disturbances. This dynamic approach enables the system to handle both PLD and EPOW events effectively without requiring excessive holdup capacitance, thereby reducing power supply system complexity
2Device complexity
If the system uses a single mechanism to indicate both PLD and EPOW events, then the system design is simpler, but the system cannot differentiate between real EPOW events and PLD events leading to unnecessary shutdowns
Solution Approach 1:
The patent introduces an intermediary PLD filter time mechanism between the power loss detection module and the system shutdown function. This intermediary component analyzes the duration and characteristics of power disturbances, filtering out temporary PLD events while allowing genuine EPOW events to trigger shutdown. This intermediary layer enables accurate differentiation between event types without significantly increasing overall system complexity
Solution Approach 2:
The patent implements a feedback mechanism where the power loss detection module continuously monitors power conditions and adjusts its response based on the duration and nature of power disturbances. The system uses feedback from power supply modules and system logic to determine whether to assert power loss notifications, enabling accurate differentiation between PLD and EPOW events while maintaining a relatively simple system architecture
3Reliability
If the system shuts down immediately upon detecting power loss, then data integrity is protected, but frequent PLD events cause unnecessary system outages and loss of data availability
Solution Approach 1:
The patent implements preliminary action by asserting EPOW notifications at strategically timed moments before actual power loss occurs. The system uses holdup capacitance time and PLD filter time calculations to determine the optimal moment to trigger shutdown sequences, allowing the system to prepare for power loss and protect data integrity while avoiding shutdowns for temporary PLD events that will self-correct before power is actually lost
Solution Approach 2:
The patent applies preliminary anti-action by using the PLD filter time mechanism to prevent false shutdown triggers before they can occur. The system proactively filters out temporary power disturbances by comparing their duration against the calculated PLD filter time, preventing unnecessary shutdown actions from being taken in response to PLD events while still maintaining the ability to shut down properly in response to genuine EPOW events
Data Source
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AI summary
A system and method for thresholding system power loss notifications in a data processing system are provided. Power loss detection modules are provided in a data processing system having one or more data processing devices, such as blades in an IBM BladeCenter® chassis. The power loss detection modules detect the type of infrastructure of the data processing system, a position of a corresponding data processing device within the data processing system, and a capability of the data processing system to provide power during a power loss scenario. The detection module detects various inputs identifying these types of data processing system and power system characteristics and provides logic for defining a set of behaviors during a power loss scenario, e.g., behaviors for sending system notifications of imminent power loss. The detection of the various inputs and the defining of a set of behaviors may be performed statically and/or dynamically.