Hybrid Storage Cache Controller Mapping Tables
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional hybrid drives lack an effective data processing method, leading to suboptimal read and write speeds, which hinders overall computer performance.
Innovation Solution
A system and method utilizing a cache controller with forward and backward mapping tables to direct data between regular and high-speed storage units, prioritizing writes to high-speed storage for increased efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data are written to both HDD and SSD simultaneously for synchronization, then data consistency is maintained, but write speed and system performance are hindered
Solution Approach 1:
The storage system is segmented into two independent paths: a fast path for SSD writes and a slow path for HDD writes. The mapping table mechanism segments the data access process, allowing independent optimization of each path without requiring simultaneous synchronization, thus resolving the contradiction between consistency and speed.
Solution Approach 2:
The system performs preliminary actions by pre-establishing mapping tables that associate logical block addresses with physical storage locations on either SSD or HDD. This preliminary mapping allows the system to determine the optimal write path in advance, avoiding the need for simultaneous writes and maintaining both speed and consistency.
2Device complexity
If conventional hybrid drive control is used, then hardware structure is simple, but read and write speeds are suboptimal
Solution Approach 1:
A mapping table is introduced as an intermediary component between the logical address space and physical storage devices. This intermediary structure enables intelligent data routing decisions, allowing the system to achieve high speeds without complex real-time control algorithms, thus resolving the contradiction between structural simplicity and performance.
3Quantity of substance
If all data are stored on HDD for capacity, then storage cost is reduced, but access speed becomes the bottleneck
Solution Approach 1:
The system applies local quality by differentiating storage locations based on data access patterns. Frequently accessed data are routed to the SSD (high-speed location), while less frequently accessed data remain on the HDD (high-capacity location). This localized optimization resolves the contradiction between capacity and speed by providing both storage types in appropriate locations.
Data Source
AI summary
The present invention is to provide a system for increasing read and write speeds of a hybrid storage unit, which includes a cache controller connected to the hybrid storage unit and a computer respectively, and stores forward and backward mapping tables each including a plurality of fields. The hybrid storage unit is composed of at least one regular storage unit (e.g., an HDD) having a plurality of regular sections corresponding to forward fields respectively, and at least one high-speed storage unit (e.g., an SSD) having a plurality of high-speed storage sections corresponding to backward fields respectively with higher read and write speeds than the regular storage unit. The cache controller can make the high-speed storage section corresponding to each backward field correspond to the regular section corresponding to the forward field, thus allowing the computer to rapidly read and write data from and into the hybrid storage unit.