Solid-State Storage Data Pipeline for Sequential Writes and ECC
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Solution Overview
Problem
Random access methods in solid-state storage devices are inefficient, leading to premature failure due to uneven data distribution and longer write times compared to read times, which limits their performance and lifespan.
Innovation Solution
A data pipeline system that indexes and manages data segments with different requirements, including compression and encryption, using a bi-directional storage I/O bus and a solid-state storage controller with write and read pipelines to efficiently write and read data, correcting errors and reformatting data as needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If random access methods are used in solid-state storage, then data can be accessed at any location, but write times become much longer than read times and performance is limited
Solution Approach 1:
The patent segments data into fixed-size blocks that are sequentially written to the solid-state storage device. This segmentation allows the system to transform random access patterns into sequential write operations, significantly improving write performance while maintaining the ability to access any data location through the mapping structure.
Solution Approach 2:
The patent introduces a mapping structure as an intermediary between the host system and the solid-state storage device. This mapping layer translates random access requests into sequential write operations, resolving the contradiction between access flexibility and write speed by mediating between the two requirements.
2Adaptability or versatility
If random access is used for solid-state storage, then data can be written to any location, but some regions are overused leading to premature failure
Solution Approach 1:
The patent divides the storage device into multiple data blocks and uses a mapping structure to distribute data segments across these blocks sequentially. This segmentation and distribution approach ensures uniform wear across all blocks, preventing any single region from being overused and extending device lifespan.
Solution Approach 2:
The patent performs preliminary actions by pre-allocating and sequentially writing data blocks before they are actually needed. This preliminary sequential writing distributes wear evenly across the storage medium from the outset, preventing premature failure due to localized overuse.
3Ease of manufacture
If traditional data handling techniques are used, then implementation is simple, but solid-state storage cannot achieve higher possible performance
Solution Approach 1:
The patent introduces a mapping structure as an intermediary layer that sits between the host system and the solid-state storage device. This mapping layer enables advanced performance optimizations while maintaining a relatively simple implementation, as the mapping logic can be implemented in software or firmware without changing the physical storage architecture.
Solution Approach 2:
The patent implements dynamic data placement and management through the mapping structure, which can adaptively manage data blocks based on current storage conditions and access patterns. This dynamic approach enables higher performance while keeping the overall system architecture simple and manageable.
Data Source
AI summary
An apparatus, system, and method are disclosed for managing data in a solid-state storage device. A solid-state storage and solid-state controller are included. The solid-state storage controller includes a write data pipeline and a read data pipeline The write data pipeline includes a packetizer and an ECC generator. The packetizer receives a data segment and creates one or more data packets sized for the solid-state storage. The ECC generator generates one or more error-correcting codes (“ECC”) for the data packets received from the packetizer. The read data pipeline includes an ECC correction module, a depacketizer, and an alignment module. The ECC correction module reads a data packet from solid-state storage, determines if a data error exists using corresponding ECC and corrects errors. The depacketizer checks and removes one or more packet headers. The alignment module removes unwanted data, and re-formats the data as data segments of an object.