RAID SSD System with PCI-Express Host Interface
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Solution Overview
Problem
Existing semiconductor storage devices face inefficiencies due to slow data processing speeds and inadequate interfaces, which hinder the utilization of high-speed data input/output performance.
Innovation Solution
A RAID-controlled SSD-based system with a high-speed, non-volatile host interface is implemented, featuring a RAID controller coupled to memory units with cache memory and SSD memory units, optimizing data transmission and providing backup and restore functions through a PCI-Express interface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a high-speed host interface is implemented, then data processing speed is improved, but interface complexity increases
Solution Approach 1:
A PCI-Express interface unit is introduced as an intermediary component between the host and the SSD memory disk unit. This interface unit handles signal synchronization and data transmission protocols, enabling high-speed data processing while managing the complexity of the interface through a dedicated mediator component rather than requiring complex integration throughout the entire system.
2Productivity
If data signal synchronization is implemented between host and SSD, then high-speed data processing is achieved, but device complexity increases
Solution Approach 1:
The PCI-Express interface unit serves as a mediator that implements data signal synchronization between the host and SSD. By concentrating the synchronization control logic in this dedicated interface unit rather than distributing it throughout the system, high-speed data transmission is achieved while containing the complexity within a single manageable component.
Solution Approach 2:
The system replaces traditional mechanical data transmission methods with electronic signal synchronization through the PCI-Express interface. This substitution enables high-speed data processing by using electronic signal coordination instead of mechanical or slower electrical interfaces, while the interface unit manages the complexity of signal synchronization.
3Reliability
If RAID controller with cache memory is implemented, then fault tolerance is improved, but device complexity increases
Solution Approach 1:
The storage system is segmented into multiple SSD memory disk units that can be independently managed by the RAID controller. This segmentation allows the system to implement fault tolerance by distributing data across multiple units while keeping each unit relatively simple in structure. The RAID controller manages the complexity of coordinating these segmented units to provide overall system reliability.
Solution Approach 2:
The RAID controller acts as an intermediary between the host and multiple SSD memory disk units, implementing fault tolerance through RAID algorithms and cache memory management. By concentrating the fault tolerance mechanisms in this dedicated controller rather than requiring each SSD unit to be independently fault-tolerant, the system achieves high reliability while maintaining simpler individual component designs.
Data Source
AI summary
Embodiments of the invention provide a RAID controlled SSD-based system having a high-speed, non-volatile host interface. Specifically, in a typical embodiment, a RAID-controlled device is provided that comprises a high-speed host interface that is coupled to a redundant array of independent disks (RAID) controller. The RAID controller itself is coupled to a set of controlled memory units that each comprises: a main controller coupled to cache memory; and a set of SSD memory units (each having a set of blocks of memory) coupled to the main controller.