SCSI Endpoint Virtualization in Fibre Channel Networks
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Solution Overview
Problem
Current Fibre Channel network systems face difficulties in managing virtual and physical ports due to discrete and complex configuration processes, which hinder efficient reconfiguration and management, especially in large-scale data storage environments.
Innovation Solution
The implementation of a virtual/physical port management layer that abstracts SCSI targets and allows dynamic management of both physical and virtual ports, enabling unified management and endpoint flexibility, including endpoint failover and creation, to simplify the configuration and operation of Fibre Channel networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If Fibre Channel networks use NPIV to allow multiple virtual ports to share a single physical port, then hardware requirements are eased and storage virtualization is enabled, but port reconfiguration and management become relatively difficult
Solution Approach 1:
The patent introduces a Fibre Channel translation layer as an intermediary component that sits between the physical Fibre Channel ports and the virtual storage resources. This translation layer abstracts the complex port management operations, providing a simplified interface for configuring and managing virtual ports while handling the underlying complexity of NPIV mappings automatically.
Solution Approach 2:
The patent segments the port management functionality into distinct layers: physical port layer, translation layer, and virtual port layer. This segmentation allows independent management of each layer, enabling administrators to configure virtual ports without directly manipulating physical port settings, thereby simplifying operations while maintaining full NPIV functionality.
2Ease of operation
If Fibre Channel networks are reconfigured to improve management efficiency, then operational flexibility increases, but system availability may be compromised during reconfiguration
Solution Approach 1:
The patent implements preliminary configuration of translation rules and mappings before actual port reconfiguration is needed. The translation layer pre-establishes mapping relationships between virtual and physical ports, so that when reconfiguration is required, changes can be applied smoothly without disrupting ongoing data operations, thus maintaining system availability throughout the reconfiguration process.
Data Source
AI summary
Embodiments are described for systems and methods that transparently virtualize SCSI transport endpoints for management purposes between Fiber Channel base nodes and virtual nodes. An N_Port ID Virtualization mapping component maps multiple endpoints to a single physical port. The endpoints are abstract objects that have attributes can be moved around the system. This allows virtual port management (e.g., port migration, moving ports, removing ports, adding ports, etc.) to be performed on many virtual ports in a unified manner. This allows storage area network to be configured with virtual endpoints that span both base and virtual ports.