Interleaved ECC for Direct Key-Value Storage Writes
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Solution Overview
Problem
Key-Value (KV) databases in data storage devices face inefficiencies due to complex translation layers and mapping processes, leading to increased latency, power consumption, and reduced performance in handling user data.
Innovation Solution
Implementing an interleaved Error Correction Code (ECC) coding system within a data storage controller that simplifies operations by removing unnecessary translation layers and mapping processes, allowing for direct key-value pair transactions, thereby enhancing performance and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional translation layers and mapping processes are used in KV database storage, then data can be stored and retrieved, but latency increases and transaction throughput decreases
Solution Approach 1:
The patent removes the Flash Translation Layer (FTL) and namespace mapping processes from the storage system. By extracting these intermediate translation components, data can be written directly to storage locations corresponding to key-value pairs without requiring translation operations, thereby reducing latency and increasing transaction throughput
Solution Approach 2:
The patent implements interleaved ECC coding that segments error correction capabilities across multiple key-value pairs. By dividing ECC protection across adjacent key-value entities rather than protecting each independently, the system reduces the overhead per transaction while maintaining reliability
2Reliability
If traditional translation layers and mapping processes are used in KV database storage, then data can be stored and retrieved, but power consumption increases
Solution Approach 1:
By removing the FTL and namespace mapping layers, the patent eliminates the power consumption associated with these translation operations. The direct write approach to storage locations significantly reduces the computational energy required for each key-value transaction while maintaining data integrity through interleaved ECC
3Reliability
If traditional ECC coding is used without interleaving, then error correction is provided for individual key-value pairs, but correction capability is limited when multiple adjacent pairs suffer errors
Solution Approach 1:
The patent merges error correction capabilities across multiple adjacent key-value pairs through interleaved ECC coding. By combining ECC protection across a group of key-value entities rather than treating each independently, the system achieves broader error correction capability while managing complexity through structured interleaving patterns
Solution Approach 2:
The patent introduces a new dimension to ECC coding by interleaving error correction bits across multiple key-value pairs in a systematic pattern. This dimensional transformation allows the ECC system to protect against errors spanning multiple adjacent pairs while maintaining manageable code structure and decoding complexity
Data Source
AI summary
Interleaved ECC coding for key-value data storage devices. In one embodiment, a controller includes a memory interface including a namespace database; an ECC engine; a controller memory; and an electronic processor. The electronic processor is configured to receive a host write command, determine whether write access was setup as a key-value (KV) namespace in the namespace database and is associated with the host write command, and control the ECC engine and the memory interface to perform one or more program operations on the data in the memory using the interleaved ECC coding and based on the host write command in response to determining that the write access was setup as the KV namespace in the namespace database and the KV namespace is associated with the host write command.