Flash Disk RAID Controller Integration
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Solution Overview
Problem
Conventional RAID systems require separate hardware for RAID controllers, which consumes CPU resources and is not suitable for Flash Electronic Disks, limiting their data integrity and performance.
Innovation Solution
Integrating RAID control mechanisms into Flash Electronic Disk controllers, eliminating the need for separate RAID controller hardware by using a RAID Control Module with an XOR Engine and RAID Cache, supporting all RAID levels via generic IO interfaces like SATA, SCSI, or PCIe.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate hardware RAID controller is used, then data integrity is improved, but device complexity and CPU resource consumption increase
Solution Approach 1:
The patent merges the RAID controller functionality directly into the flash electronic disk controller, eliminating the need for separate hardware entities. The RAID control module is integrated within the existing disk controller architecture, combining storage control and RAID management functions in a single unit, thus reducing overall system complexity while maintaining data integrity benefits
Solution Approach 2:
The flash electronic disk controller is designed to perform multiple functions: it acts as both a standard storage controller and a RAID controller simultaneously. The integrated controller can handle basic disk operations while also implementing RAID levels 0-5, making the system multi-functional without requiring additional specialized hardware
2Device complexity
If firmware-based RAID control is used, then device complexity is reduced, but CPU resources are consumed
Solution Approach 1:
The patent replaces firmware-based software RAID control with a dedicated hardware RAID control module integrated into the disk controller. This hardware implementation uses dedicated logic circuits and an XOR engine for parity calculations, substituting general-purpose CPU operations with specialized hardware logic, thereby eliminating CPU resource consumption for RAID operations
Solution Approach 2:
The integrated RAID control module operates autonomously within the disk controller, performing RAID management functions independently without requiring CPU intervention. The controller self-manages RAID operations including parity calculation, data striping, and redundancy management through its dedicated hardware components
3Speed
If Flash Electronic Disks are used, then data accessing speed is improved, but data integrity measures are limited
Solution Approach 1:
The patent combines the high-speed flash memory technology with RAID data integrity mechanisms by integrating the RAID control module directly into the flash electronic disk controller. This merging allows the system to maintain flash memory's inherent speed advantages while adding hardware-based RAID protection for data integrity across multiple flash disks
Data Source
AI summary
In an embodiment of the invention, a method is presented to operationally integrate one or more RAID control mechanisms into a flash electronic disk controller. The method includes incorporating one or more RAID features into a flash electronic disk by adding one or more RAID components in a flash controller, wherein the flash electronic disk includes a RAID control module to control the one or more RAID components; receiving a read or write operation command at a flash controller from a host; translating the read or write operation command into a command format understood by one or more flash controllers; translating the command format into an instruction format understood by one or more flash memory devices; and accessing one or more memory locations in the one or more flash memory devices according to the instruction format to perform a read or write operation for the host.