The question focuses on the running statuses of remote replication pairs in Huawei’s flash storage systems, such as OceanStor Dorado. The *HCIP-Storage V5.5 Training Material (Module 4: StorageDesign and Implementation)* details the remote replication feature and its statuses. The material states: “When the pair running status is ‘Normal,’ the remote replication pair is fully synchronized, meaning data between the primary and secondary LUNs is consistent, and synchronization is complete.” This matches option C.

- Option A: Incorrect. The training material indicates that if a pair is deleted from one site, causing inconsistency, the status may not necessarily change to “To be recovered.” Instead, it may require manual intervention or reconfiguration, and “To be recovered” is typically associated with link failures or incomplete synchronization, not deletion.

- Option B: Incorrect. The “Split” status occurs when the pair relationship is interrupted, but it can be due to manual intervention or automatic triggers (e.g., link failure). The parenthetical “not manually” is misleading, as the material does not restrict “Split” to non-manual causes.

- Option D: Incorrect. The “To be synchronized” status indicates that the pair is preparing for synchronization but is not yet consistent. There is no requirement to manually disconnect the pair for single LUN service needs, as the system can operate with the primary LUN independently during this state.

Thus, option C is the only accurate statement based on official documentation.

This question tests knowledge of disk status indicators in Huawei OceanStor Pacific 9950 systems. The *HCIP-Storage V5.5 Training Material (Module 5: Storage System Maintenance and Troubleshooting)* provides details on disk module indicators: “A steady yellow location indicator on a main storage disk module indicates that the disk is faulty or about to fail. This status signals that the disk requires attention, such as replacement, to prevent data loss or service disruption.” The material further clarifies the following for other options:

- Option A: Incorrect. A blinking yellow indicator, not a steady one, typically indicates that the disk is being located (e.g., via DeviceManager or CLI).

- Option B: Incorrect. A steady green indicator signifies that the disk is running properly.

- Option C: Incorrect. A powered-off disk would have no indicator light or a specific power-off signal, not a steady yellow light.

Thus, option D accurately describes the disk’s status.

The *HCIP-Storage V5.5 Training Material (Module 5: Storage System Maintenance and Troubleshooting)* discusses fault rectification: “The replacement method, which involves swapping components to identify faults, is effective for hardware issues but not suitable for all fault types (e.g., software or configuration errors). It requires trained maintenance personnel with knowledge of system architecture and safety procedures to avoid service disruptions.” The statement that it can address anyfault type and has no special personnel requirements is false, as the method is limited and demands expertise.