Quorum Authorization for Restricted Storage Operations

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Solution Overview

Problem

Traditional storage systems face inefficiencies due to redundant write operations and lack of centralized control over storage processes, leading to increased wear and reduced reliability of flash drives.

Innovation Solution

Implementing a direct-mapped flash storage system where higher-level processes manage data operations without lower-level storage controllers, utilizing non-volatile RAM for buffering and centralized control to optimize data management and reduce unnecessary writes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional storage systems with lower-level storage controllers are used, then data operations can be managed at the controller level, but redundant write operations increase and flash drive wear accelerates

Engineering Contradiction:

Improveflash drive reliabilityVSAvoidwrite operation efficiency

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent extracts the storage controller functionality from the lower level and moves it to the file system layer. The file system now directly manages flash drive operations without intermediary controllers, eliminating redundant write commands and improving both reliability and write efficiency.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent introduces a buffer as an intermediary component between the file system and flash drives. This buffer (implemented as non-volatile RAM) captures write operations, performs wear leveling, and manages data placement, thereby reducing direct write operations to flash memory and extending drive lifespan.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Ease of operation

If lower-level storage controllers manage data operations, then control is distributed, but centralized control is lacking and unnecessary writes occur

Engineering Contradiction:

Improvedata management controlVSAvoidenergy wasted on redundant writes

Core Design Contradiction:

Ease of operationVSLoss of energy

Solution Approach 1:

The patent merges the storage controller functionality into the file system layer, creating a unified control mechanism. This consolidation enables centralized management of flash drive operations, eliminating the need for separate lower-level controllers and reducing redundant write operations.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent implements feedback mechanisms where the file system monitors flash drive status and adjusts write operations accordingly. The buffer tracks data placement and wear patterns, providing feedback to optimize future write operations and prevent unnecessary writes that waste energy.

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS12554865B2Quorum-based authorization of requests associated with storage systems

Publication Date: 2026.02.17 PURE STORAGE INC

AI summary

An illustrative method includes detecting a request to perform a restricted operation with respect to a storage system; monitoring, in response to the request, for authorization events pertaining to the restricted operation and performed by a plurality of entities; detecting, while performing the monitoring, that a threshold plurality of the authorization events are performed by the plurality of entities; and directing, based on the detecting that the threshold plurality of authorization events are performed by the plurality of entities, the storage system to perform the restricted operation.