Memory System High-Performance Mode for Urgent Data Writes
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Solution Overview
Problem
Memory systems and host systems are not configured for sufficiently quick storage operations during urgent situations, such as vehicle collisions, due to limited storage space and ongoing operations, which can lead to data loss.
Innovation Solution
Implementing a high performance mode in memory systems by provisioning a dedicated logical unit, aborting ongoing operations, and adjusting operational parameters to increase write speed, such as bit rate and clock speeds, to quickly store critical data before power loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If memory systems operate in normal mode with ongoing memory management operations, then data storage capacity is maximized, but write speed is insufficient for urgent situations
Solution Approach 1:
The memory system dynamically switches between normal operation mode and high performance mode based on host commands. In high performance mode, the system aborts ongoing memory management operations (garbage collection, wear leveling) to prioritize rapid data writing, while normally these operations maintain optimal storage capacity and longevity. This dynamic mode switching resolves the contradiction between write speed and storage productivity.
Solution Approach 2:
The memory system segments operations into two distinct categories: routine memory management operations (garbage collection, wear leveling, bad block management) and urgent data writing operations. By separating these operation types and allowing the host to trigger high performance mode for urgent writes, the system can optimize for speed when needed while maintaining storage productivity during normal operation.
2Reliability
If memory systems perform comprehensive memory management operations, then data storage reliability is improved, but processing time increases
Solution Approach 1:
The memory system performs memory management operations (garbage collection, wear leveling) as preliminary background tasks during normal operation. When the host issues a high performance mode command, these operations are aborted to prevent them from interfering with urgent data writing. The reliability aspects are maintained through periodic execution of these management operations when not in high performance mode.
Solution Approach 2:
The system dynamically adjusts the execution of memory management operations based on operational mode. During high performance mode, management operations are suspended to minimize processing time for urgent writes. During normal mode, these operations execute to maintain data storage reliability. This dynamic adjustment resolves the contradiction between reliability and processing time.
3Quantity of substance
If memory systems allocate space for ongoing operations, then operational flexibility is maintained, but available storage space for urgent data is reduced
Solution Approach 1:
The system extracts memory management operations (garbage collection, wear leveling) from the critical data writing path by allowing the host to abort these operations when high performance mode is triggered. This ensures that the full available storage space can be dedicated to urgent data writing without being consumed by background management tasks, while still maintaining operational flexibility through periodic execution of these management operations during normal mode.
Data Source
AI summary
Methods, systems, and devices for techniques for improved write performance modes are described. A memory system and a host system may support a high performance mode to write data to the memory system. For example, the host system may provision a dedicated logical unit of the memory system. Upon detecting an urgent situation, the host system may transmit a command to the memory system to enter the high performance mode. In response to the command, the memory system may abort ongoing operations, such as internal memory management operations. Additionally, the host system and the memory system may configure operational parameters to increase the speed of write operations, such as a trim set for writing data to the logical unit, a bit rate of data transfer between the host system and the memory system, clock speeds of the memory system, or a combination thereof.