Storage Controller Using Memory-Area Deactivation for Temperature Control
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Solution Overview
Problem
The performance and reliability of storage devices degrade due to increased temperature, which affects data integrity and operational efficiency.
Innovation Solution
A storage device with a controller that monitors temperature and adjusts operations by migrating data from volatile memory to nonvolatile memory and deactivating certain data areas when temperature thresholds are exceeded, thereby reducing the need for refresh operations and maintaining system temperature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If refresh operations are periodically performed on volatile memory data areas, then data integrity is maintained, but system temperature increases causing performance degradation
Solution Approach 1:
The volatile memory is divided into multiple data areas, and the controller selectively deactivates specific data areas based on temperature conditions. This segmentation allows the system to maintain data integrity in active areas while reducing refresh operations in deactivated areas, thereby lowering temperature without compromising overall reliability.
Solution Approach 2:
Instead of performing refresh operations on all data areas continuously, the controller applies partial action by selectively refreshing only the necessary active data areas. When temperature exceeds thresholds, the controller reduces refresh operations to specific areas, maintaining adequate data integrity while preventing excessive temperature rise.
2Productivity
If data is stored in volatile memory for fast access, then operational efficiency is improved, but temperature increases leading to performance degradation
Solution Approach 1:
The controller dynamically adjusts the state of data areas in volatile memory based on real-time temperature monitoring. When temperature is within acceptable ranges, data areas remain active for fast access. When temperature exceeds thresholds, the controller transitions data areas to deactivated state, migrating data to nonvolatile memory, thereby reducing temperature while maintaining operational efficiency through adaptive management.
Solution Approach 2:
The controller changes the operational parameters of volatile memory data areas based on temperature conditions. By transitioning data areas between active and deactivated states according to temperature thresholds, the system adjusts memory usage patterns to balance fast access performance with temperature control, preventing performance degradation.
3Speed
If all data areas in volatile memory remain activated, then data access speed is maximized, but temperature control becomes difficult causing reliability degradation
Solution Approach 1:
The controller implements a feedback mechanism by continuously monitoring system temperature and adjusting the activation state of volatile memory data areas accordingly. When temperature exceeds predefined thresholds, the controller receives feedback and responds by deactivating appropriate data areas and migrating data to nonvolatile memory. This closed-loop control maintains data access speed within acceptable ranges while ensuring temperature control and performance reliability.
Data Source
AI summary
A storage device may migrate data stored in a partial data area of a volatile memory to a nonvolatile memory depending on a system temperature, and may deactivate the corresponding data area, whereby it is possible to variably adjust data areas on which a refresh operation is performed in the volatile memory. Since data areas on which a refresh operation is performed are adjusted depending on a system temperature, a storage device capable of adjusting the system temperature and preventing performance and reliability from degrading according to the system temperature may be provided.