A financial customer purchases Huawei OceanStor Pacific 9950 for service deployment. During a routine inspection, an engineer finds that a main storage disk of the device is faulty and uses SmartKit to replace it. Which of the following statements is true about replacing the disk?

Statement B is correct. SmartKit is Huawei's unified toolkit for deployment, maintenance, and upgrades. When used for parts replacement, it provides a guided, step-by-step workflow. This process invariably includes mandatory pre-processing or pre-check steps, such as confirming the disk's fault status, ensuring data has been reconstructed, and logically preparing the disk for removal. The engineer must follow these prompts to ensure a safe and successful replacement.

A is incorrect: The procedure for removing a disk does not involve waiting 60 seconds after unseating it from the connector but before removing it from the chassis. The standard action is to unlatch the handle and pull the disk out smoothly. C is incorrect: The time limit for a disk slot to be empty is critical for maintaining proper airflow and cooling, but the value is typically much shorter than 10 minutes for high-density chassis like the OceanStor Pacific 9950. The official documentation usually specifies a limit of 2 to 5 minutes. D is incorrect: There is a required waiting interval between removing the old disk and inserting the new one to allow the system to register the state change. However, the minimum specified time in Huawei documentation is typically 30 seconds or more, not 10 seconds. Inserting a new disk too quickly can cause the system to fail to identify it correctly.

Huawei OceanStor Pacific Series 8.1.0 Parts Replacement Guide. The section "Replacing a Disk" details the procedure using SmartKit. It explicitly states: "Perform pre-replacement check as prompted by SmartKit" and "Perform operations as prompted by SmartKit." It also specifies the timing requirements: "The duration from when a disk is removed to when a new disk is inserted cannot exceed 2 minutes" and "After removing the faulty disk, wait at least 30 seconds before you insert a new disk." These official figures directly contradict options A, C, and D, while confirming the process described in B.