Dynamic Controller Memory Buffer Allocation
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Solution Overview
Problem
Existing data storage devices have a fixed and constant size for the controller memory buffer, which limits flexibility and efficiency in managing memory resources during operation.
Innovation Solution
Implementing a dynamic controller memory buffer allocation system that allows the host and data storage device to modify the size of the controller memory buffer during operation, based on current workload and available space, using dedicated commands and allocation modules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the controller memory buffer size is set to be constant during operation, then the system stability is improved, but the adaptability to changing workload conditions deteriorates
Solution Approach 1:
The patent applies the dynamics principle by enabling the controller memory buffer size to change from a static constant to a dynamic adjustable parameter. The host can now modify the buffer size during operation based on current workload conditions, allowing the system to adapt between different operational states (e.g., larger buffer for high-performance sequential workloads, smaller buffer for power-constrained scenarios) while maintaining stability through controlled adjustment mechanisms.
2Productivity
If the controller memory buffer size is increased, then the productivity is improved, but the use of energy deteriorates
Solution Approach 1:
The system dynamically adjusts the controller memory buffer size based on actual workload demands. During high-performance scenarios requiring large buffers for optimal data transfer, the buffer is expanded. During power-constrained or low-demand scenarios, the buffer is reduced to minimize energy consumption. This dynamic scaling resolves the contradiction by making memory allocation flexible rather than fixed.
Solution Approach 2:
The patent changes the parameter of controller memory buffer size from a fixed value to a variable that can be modified during operation. This parameter change allows the system to optimize the trade-off between productivity (larger buffer) and energy usage (smaller buffer) by adjusting the buffer size according to real-time conditions, thereby resolving the contradiction between these two opposing requirements.
3Adaptability or versatility
If the controller memory buffer size is made variable, then the adaptability is improved, but the device complexity deteriorates
Solution Approach 1:
The system incorporates feedback mechanisms where the host monitors workload conditions and sends commands to adjust the buffer size accordingly. The controller receives these commands, processes them, and modifies the buffer allocation. This feedback loop enables adaptability while managing complexity through structured communication protocols between host and controller.
Solution Approach 2:
While dynamic adjustment introduces complexity, the patent manages this by establishing clear control interfaces and protocols. The host initiates buffer size changes through standardized commands, and the controller executes these changes with appropriate error handling and state management. This structured approach to dynamics keeps the complexity manageable while achieving the desired flexibility.
Data Source
AI summary
A data storage device and method for dynamic controller memory buffer allocation are disclosed. In one embodiment, a data storage device is provided comprising a memory and a controller with a controller memory buffer. The controller is configured to communicate with the non-volatile memory and is further configured to configure a size of the controller memory buffer; receive a request from the host to modify the size of the controller memory buffer during operation of the data storage device; and determine whether to grant the request to modify the size of the controller memory buffer. Other embodiments are possible, and each of the embodiments can be used alone or together in combination.