Zoned Memory Mode Switching for Hot and Non-Hot Data
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Solution Overview
Problem
Existing memory systems and systems thereof face challenges in optimizing memory modes for efficient data storage, particularly in managing hot and non-hot data, and in providing flexible and efficient memory mode switching mechanisms.
Innovation Solution
A memory system with a memory controller that supports zoned storage, allowing for switching between different memory modes (first and second modes) based on data type (hot vs. non-hot) and utilizing mode switching information to optimize data storage efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If memory systems use a single memory mode for all zones, then the system structure is simple, but data storage efficiency is reduced because hot data and non-hot data cannot be optimized differently
Solution Approach 1:
The patent divides the memory system into multiple zones, where each zone can independently operate in different memory modes (first mode for hot data with faster access, second mode for non-hot data with higher capacity). This segmentation allows differential optimization of storage efficiency without requiring complete system complexity, as each zone is managed independently with mode switching information stored locally.
Solution Approach 2:
Different zones within the memory system are assigned different memory modes based on their specific data storage needs. Hot data zones use the first memory mode optimized for speed, while non-hot data zones use the second memory mode optimized for capacity. This local quality approach enables targeted optimization of storage efficiency in each zone without uniformly increasing system complexity.
2Productivity
If memory systems support multiple memory modes for different zones, then data storage efficiency is improved through optimized hot and non-hot data handling, but the device complexity increases due to mode switching mechanisms
Solution Approach 1:
The system performs preliminary actions by pre-establishing multiple memory modes and pre-assigning zones to appropriate modes based on data characteristics. Mode switching information is prepared in advance and stored with zone metadata, allowing the system to efficiently transition between modes without complex real-time decision-making, thus improving overall performance while managing complexity through advance preparation.
Solution Approach 2:
The memory system implements dynamic adaptability by allowing zones to switch between different memory modes based on data access patterns and requirements. The mode switching mechanism enables the system to dynamically adjust its operational state, transitioning zones between first and second modes as needed, thereby optimizing overall system performance while the switching framework manages the complexity of multiple modes.
3Adaptability or versatility
If the memory controller switches memory modes frequently, then adaptability to different data types is improved, but the operation time increases due to mode switching overhead
Solution Approach 1:
The patent combines mode switching operations with existing memory operations such as zone reset operations. When a zone reset is performed, the mode switching information is updated and applied simultaneously, rather than as a separate operation. This merging reduces the time penalty for mode switching while maintaining the system's adaptability to different data types, as the switching occurs as part of routine maintenance operations.
4Device complexity
If zones are configured to support only sequential write, then the device complexity is reduced, but the versatility of the storage system is limited
Solution Approach 1:
The patent implements a universal zone management framework that, while primarily optimized for sequential write operations, can accommodate different memory modes and data types within zones. The zone descriptor structure and mode switching mechanism provide a flexible foundation that can support various storage operations and data characteristics, enhancing versatility without significantly increasing the fundamental sequential write architecture's complexity.
Data Source
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AI summary
Examples of the present disclosure provide a memory system and an operation method, a system, and a storage medium thereof, wherein the memory system includes a memory and a memory controller coupled with the memory. The memory controller is configured to control the memory to perform zoned storage by zones, wherein a storage space of a single zone is configured to support sequential write; wherein the memory controller is configured to have a first interface coupled with a host and to receive a first command from the host through the first interface; the first command includes an identifier of a specified zone and mode switching information of the specified zone; and the memory controller is further configured to switch a memory mode of the specified zone to a target memory mode indicated in the mode switching information according to the mode switching information.