Bitmap-Mapped SSD Telemetry Logging for Host Resource Bottlenecks

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Solution Overview

Problem

Existing memory device log management systems face challenges in efficiently managing voluminous log data due to lack of structured, customizable methods for log storage and retrieval, leading to processing resource consumption and bandwidth bottlenecks, and inadequate proactive monitoring of SSD health.

Innovation Solution

Implementing a dedicated telemetry namespace with a memory controller that uses a bitmap to selectively map and store relevant log parameters, allowing for automated log storage and retrieval, reducing processing power and enabling timely detection of SSD issues.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of information

If the host system actively participates in logging and stores all log parameters in its memory, then complete log data is captured, but processing resources are consumed and bandwidth bottlenecks occur

Engineering Contradiction:

Improvelog data completenessVSAvoidprocessing resource consumption

Core Design Contradiction:

Loss of informationVSUse of energy by moving object

Solution Approach 1:

The patent extracts the logging function from the host system and relocates it to the storage device. The storage device independently captures and stores log parameters in its dedicated telemetry namespace, eliminating the need for the host system to actively participate in logging operations while maintaining complete log data capture.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The storage device performs self-logging by autonomously capturing log parameters and storing them in its internal memory without requiring host system intervention. This self-service approach reduces processing resource consumption on the host while ensuring complete log data is preserved.

Inventive Principle:

Principle #25Self-service

2Reliability

If all log parameters are stored in the host system memory, then comprehensive monitoring is achieved, but bandwidth bottlenecks occur

Engineering Contradiction:

Improvemonitoring capabilityVSAvoidbandwidth consumption

Core Design Contradiction:

ReliabilityVSLoss of energy

Solution Approach 1:

The patent extracts the log storage function from the host system memory and places it in a dedicated telemetry namespace within the storage device's memory. This extraction reduces bandwidth consumption by eliminating repeated data transfers while maintaining comprehensive monitoring capability through the storage device's independent logging.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The storage device acts as an intermediary that captures and stores log parameters locally before selective retrieval. This intermediary role reduces bandwidth consumption by minimizing data transfer between host and storage device while preserving complete log information for monitoring purposes.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Productivity

If a dedicated telemetry namespace is implemented with selective log parameter mapping, then processing resources are conserved, but log storage structure complexity increases

Engineering Contradiction:

Improvelog management efficiencyVSAvoidlog storage structure

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent segments the storage device memory into a dedicated telemetry namespace that is separate from user data namespaces. This segmentation organizes log parameters in a structured manner, improving log management efficiency while containing structural complexity within a specific memory region rather than throughout the entire storage system.

Inventive Principle:

Principle #1Segmentation

4Loss of information

If the host system retrieves and processes all log data, then complete diagnostic information is obtained, but response time to issues increases

Engineering Contradiction:

Improvediagnostic information completenessVSAvoidissue detection time

Core Design Contradiction:

Loss of informationVSLoss of time

Solution Approach 1:

The patent implements preliminary action by having the storage device continuously capture and store log parameters in its telemetry namespace in advance of any host system retrieval. This preliminary logging ensures that diagnostic information is already available and organized when needed, reducing issue detection time while maintaining information completeness.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS12487921B1Enhanced memory log management

Publication Date: 2025.12.02 MICRON TECHNOLOGY INC

AI summary

A memory device includes a memory configured with a telemetry namespace, wherein the telemetry namespace is dedicated to storing mapped log parameters of a plurality of log pages, wherein each log page of the plurality of log pages is associated with a respective set of log parameters that, as a whole, provide a full set of log parameters; and a memory controller integrated with the memory and configured to manage operations of the memory. The memory controller is configured to use a bitmap that selectively maps log parameters from the full set of log parameters to the telemetry namespace as the mapped log parameters. The memory controller is configured to monitor the log parameters of the full set of log parameters, and store log information of the mapped log parameters into the telemetry namespace.