An industry customer purchases several Huawei flash storage devices for service deployment. During routine management, an engineer finds that a controller of one device is faulty, but the fault is common, so the engineer does not need to perform emergency handling.
The *HCIP-Storage V5.5 Training Material (Module 5: Storage System Maintenance and Troubleshooting)* addresses controller faults in Huawei flash storage systems, such as OceanStor Dorado: ''A faulty controller is a critical issue that requires immediate attention, as it can impact system performance, redundancy, or availability. Even if the fault is common (e.g., a single controller failure in a dual-controller setup), emergency handling is necessary to replace the controller and restore full redundancy to prevent potential service disruptions.'' The statement that no emergency handling is needed is false, as controller faults always warrant prompt action to ensure system reliability.
HCIP-Storage V5.5 Training Material, Module 5: Storage System Maintenance and Troubleshooting, Section 5.18: Controller Fault Handling*, Huawei Technologies Co., Ltd.
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