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.
Reference:
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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The HyperMetro feature in Huawei storage systems, such as OceanStor Dorado, provides active-active data access with arbitration mechanisms to handle site failures. The *HCIP-Storage V5.5 Training Material (Module 4: Storage Design and Implementation)* details HyperMetro arbitration modes:
- Option A: True. The material states: "In the absence of a quorum server, HyperMetro operates in static priority mode, where the preferred site is designated to win arbitration and continue services during a failure."
- Option B: True. The material explains: "In static priority mode, if the preferred site fails, the non-preferred site does not automatically take over to avoid split-brain scenarios. Services stop, and manual intervention is required to forcibly start services on the non-preferred site."
- Option C: False. The material clarifies: "In quorum server mode, the quorum server can be deployed on physical machines or virtual machines, provided it meets the performance and network requirements." This makes the statement that it can only be deployed on physical machines incorrect.
- Option D: True. The material confirms: "In quorum server mode, if the link between storage systems fails, both systems send arbitration requests to the quorum server to determine which site continues providing services." Thus, option C is false.
Reference:
HCIP-Storage V5.5 Training Material, Module 4: Storage Design and Implementation, Section 4.5: HyperMetro Configuration and Arbitration Mechanisms*, Huawei Technologies Co., Ltd.
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This question addresses the behavior of remote replication consistency groups in Huawei storage systems, such as OceanStor Dorado or Pacific series. According to the *HCIP-Storage V5.5 Training Material (Module 4: Storage Design and Implementation)*, a consistency group ensures that multiple remote replication tasks operate as a single unit to maintain data consistency across LUNs or volumes. The material states: "In a remote replication consistency group, if one replication task fails (e.g., due to a link failure or configuration issue), the entire consistency group is affected, and other tasks do not continue running normally. The system suspends all tasks in the group to preserve data consistency until the faulty task is resolved or manually split." This ensures that dependent data sets remain synchronized. Therefore, the statement that other tasks run normally without waiting for the faulty task is false, as the consistency group halts all tasks to maintain integrity.
Reference:
HCIP-Storage V5.5 Training Material, Module 4: Storage Design and Implementation, Section 4.3: Remote Replication and Consistency Groups*, Huawei Technologies Co., Ltd.
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