SAS Automatic Zoning via Cable Detection

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Solution Overview

Problem

Human error is prevalent in SAS zoning configuration when adding new servers to a SAS architecture, as technicians often forget to reconfigure zoning, leading to inaccessible storage devices for newly connected servers.

Innovation Solution

An automatic SAS zoning configuration system that uses a management tool to detect cable connections between host devices and SAS target devices, automatically reconfiguring zones based on detected connections to ensure seamless access to storage devices.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If manual SAS zoning configuration is used, then initial setup is possible, but human error occurs when adding new servers leading to inaccessible storage devices

Engineering Contradiction:

Improveaccess reliabilityVSAvoidconfiguration complexity

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The system automatically detects new server connections and reconfigures SAS zones without human intervention. The management tool monitors cable connections and autonomously updates zoning configurations, eliminating the need for technicians to manually reconfigure zones when adding servers.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The management tool continuously monitors the SAS network for connection changes and automatically responds by reconfiguring zones. This closed-loop feedback mechanism detects when new servers are connected and triggers automatic zone updates to maintain access reliability.

Inventive Principle:

Principle #23Feedback

2Reliability

If automatic SAS zoning configuration is implemented, then human error is eliminated, but system complexity increases

Engineering Contradiction:

Improveconfiguration accuracyVSAvoidsystem complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

A management tool acts as an intermediary between the SAS network and the zoning configuration. This intermediary monitors cable connections and automatically translates physical connectivity changes into appropriate zone configurations, reducing the complexity burden on operators.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent replaces manual mechanical configuration processes with automated electronic detection and configuration. The management tool uses electronic monitoring of cable connections and automated software-based zone reconfiguration instead of manual cable management and configuration procedures.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS10664428B2SAS automatic zoning mechanism

Publication Date: 2020.05.26 QUANTA COMPUTER INC

AI summary

A system and method for automatic serial-attached SCSI (SAS) zoning configuration. The SAS based architecture includes a local area network and a SAS system having a local area network port coupled to the local area network. The SAS system includes a plurality of SAS target devices, and an expander having a series of input ports and a plurality of target ports. The target ports are coupled to the SAS target devices. A management tool is coupled to the local area network. The management tool is operable to detect a cable connection between a first host device and an input port of the series of input ports. The management tool automatically configures SAS zones to assign target devices to the first host device.