Log-Based Storage Segmentation for Non-Volatile Memory Data Management
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Solution Overview
Problem
In non-volatile memory systems, the flash translation layer may relocate obsolete data into main memory without awareness, leading to inefficient data management and increased relocation of obsolete data.
Innovation Solution
Implementing a log-based storage system that classifies data into different types (hot, warm, cold) and stores them in separate memory portions, with a controller managing the storage and garbage collection to minimize relocation of frequently updated data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the flash translation layer relocates data without awareness of intermediate storage contents, then data management simplicity is improved, but obsolete data relocation increases
Solution Approach 1:
The patent segments the storage system into three distinct portions: first portion for hot data, intermediate storage for warm data, and second portion for cold data. This segmentation allows the flash translation layer to manage each portion independently with appropriate relocation strategies, reducing unnecessary relocation of obsolete data while maintaining operational simplicity through modular management.
Solution Approach 2:
The patent introduces an intermediate storage layer as a mediator between the file system and the flash translation layer. This intermediary component tracks the validity of data across relocations and provides awareness to the flash translation layer about obsolete data, enabling intelligent relocation decisions without complicating the overall data management architecture.
2Productivity
If frequently updated data is stored separately from less frequently updated data, then relocation efficiency is improved, but storage system complexity increases
Solution Approach 1:
The storage system is divided into three segments based on data update frequency: hot data (frequently updated) in the first portion, warm data in intermediate storage, and cold data (less frequently updated) in the second portion. This segmentation enables targeted relocation strategies for each segment, improving overall relocation efficiency while managing complexity through clear separation of concerns.
Solution Approach 2:
Each storage portion is optimized with local quality characteristics appropriate to its data type. The first portion handles hot data with minimal relocation, intermediate storage manages warm data with selective relocation, and the second portion stores cold data with aggressive relocation. This local optimization improves efficiency without requiring complex global management.
3Quantity of substance
If the flash translation layer relocates obsolete data to main memory, then memory utilization is improved, but data management efficiency deteriorates
Solution Approach 1:
The system performs preliminary actions by pre-classifying data into hot, warm, and cold categories and placing them in appropriate storage portions before relocation occurs. The intermediate storage maintains awareness of data validity, allowing the flash translation layer to make informed relocation decisions that improve both memory utilization and data management efficiency.
Solution Approach 2:
The intermediate storage provides feedback to the flash translation layer about the validity and status of data in intermediate storage. This feedback mechanism enables the flash translation layer to distinguish between valid and obsolete data, relocating only necessary data to main memory, thereby improving both memory utilization and data management efficiency simultaneously.
Data Source
AI summary
Apparatuses, systems, and methods are disclosed for log-based storage for different data types in non-volatile memory. An apparatus may include a non-volatile memory element and a controller. A non-volatile memory element may include a first portion of memory, an intermediate storage, and a second portion of memory. A controller may be configured to receive a plurality of data units. A controller may be configured to classify units of data using a first data type and a second data type. A controller may be configured to store a first unit of data having a first data type in a first portion of memory and a second unit of data having a second data type in intermediate storage. Further, a controller may relocate a second unit of data to a second portion of memory.