Storage Device Thermal Management via Dynamic Performance Limiting
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Solution Overview
Problem
Existing storage devices lack effective temperature management mechanisms to prevent performance degradation and damage due to excessive internal temperatures, leading to inefficient power usage and reduced performance.
Innovation Solution
Incorporating a temperature sensor and memory controller that acquire temperature information, perform performance limiting operations, and calculate and update temperature management periods based on historical data to manage internal temperatures effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the storage device operates continuously without temperature management, then productivity is maintained, but temperature increases causing performance degradation and potential damage
Solution Approach 1:
The temperature sensor continuously monitors the internal temperature before it reaches dangerous levels. The memory controller proactively adjusts operation frequencies and activates cooling operations (read reclaim, garbage collection) in advance to prevent temperature escalation, rather than waiting for thermal throttling to occur
Solution Approach 2:
The system implements a closed-loop feedback mechanism where the temperature sensor provides real-time temperature data to the memory controller. Based on this feedback, the memory controller dynamically adjusts the operation frequency of the memory device and activates cooling operations when temperature thresholds are approached, creating a self-regulating thermal management system
2Temperature
If performance limiting operations are performed frequently to manage temperature, then temperature is controlled, but productivity decreases
Solution Approach 1:
The system dynamically adjusts the operation frequency of the memory device based on real-time temperature conditions. When temperature is within the normal range, the memory device operates at full speed. When temperature approaches thresholds, the memory controller gradually reduces the operation frequency, providing smooth transitions rather than abrupt performance limiting, thereby maintaining productivity while managing temperature
Solution Approach 2:
The memory controller implements periodic cooling operations (read reclaim, garbage collection) at strategically determined intervals based on temperature trends and usage patterns. These periodic operations provide thermal relief without requiring continuous performance limiting, allowing the system to maintain high productivity during normal operation while periodically managing temperature buildup
3Loss of energy
If temperature management operations are performed, then power efficiency is improved, but use of energy increases due to additional control operations
Solution Approach 1:
The system changes operational parameters (operation frequency, workload intensity) based on temperature conditions to optimize the balance between power consumption and thermal management. By adjusting these parameters dynamically, the system reduces unnecessary high-power operations that would generate excessive heat, thereby decreasing overall power waste while accounting for the energy consumed by temperature monitoring and control operations
Data Source
AI summary
A storage device may include: a memory device including a temperature sensor; and a memory controller for acquiring, from the memory device, temperature information sensed by the temperature sensor for a temperature management period, performing a performance limiting operation of limiting the performance of the memory device according to the temperature information, calculating the temperature management period by using the temperature information, and updating the temperature management period by using history information on a performance history of the performance limiting operation.