RAID Card PHY Chip Redundancy and Address Remapping

The patent divides the RAID card into independent functional modules, specifically the PHY chip and the rest of the card. The malfunctioning PHY chip can be individually replaced or hot-swapped without affecting other components. The management processor detects the faulty PHY chip, isolates it, and redirects its associated hard disks to healthy PHY chips, enabling partial replacement rather than whole-card replacement.

The system performs preliminary actions by detecting and isolating malfunctioning PHY chips before they cause data loss. The management processor continuously monitors PHY chip status and pre-configures backup pathways. When a PHY chip fails, the system has already prepared alternative routing paths, allowing immediate failover without data loss or system downtime.

The management processor acts as an intermediary that coordinates the replacement process. It detects the malfunctioning PHY chip, reads and preserves data from associated hard disks, redirects disk connections to healthy PHY chips, and only then allows physical replacement. This intermediary control ensures data is secured before the replacement operation occurs.

The system creates logical copies of data pathways by redirecting hard disks from the malfunctioning PHY chip to healthy PHY chips. The management processor updates the virtual device configuration to maintain data access through alternative PHY chips, effectively copying the data flow path without physical data movement, ensuring continuity during replacement.