Storage Node Redundancy Group for IO Path Integrity

The patent implements dynamic configuration management where the management unit continuously monitors storage node status and automatically adjusts IO path routing and binding relationships in response to configuration changes. When storage nodes are added or removed, the system dynamically reconfigures the mapping between ALUs and SLUs, and updates IO path routing to maintain straight relationships, thereby preserving IO performance while adapting to configuration changes.

The patent implements local quality optimization by ensuring that IO processing paths and binding relationships are maintained within the same storage node whenever possible. The management unit prioritizes local processing by keeping ALU-SLU bindings and IO paths co-located on the same node, thereby minimizing external network traffic and maximizing IO reliability. External network processing is used only when absolutely necessary for system scalability.

The patent implements a universal management unit that consolidates multiple functions including configuration management, IO path routing, binding management, and failover control into a single centralized component. This universal management approach simplifies the overall system architecture by providing centralized intelligence that coordinates redundancy operations across storage nodes, thereby achieving data control redundancy without proportionally increasing device complexity.