Assume a financial customer purchased multiple Huawei OceanStor Dorado 18000 storage devices to carry service data. A Fibre Channel link exception occurred in the storage environment. Which of the following are possible causes for this exception?
Correct Answer: A,B,C
Fibre Channel (FC) link exceptions in Huawei OceanStor Dorado 18000 systems are addressed in the *HCIP-Storage V5.5 Training Material (Module 5: Storage System Maintenance and Troubleshooting)*: "Common causes of FC link exceptions include mismatched port rates between the host and switch, poorly connected or faulty optical fibers, and mismatched optical module rates between host and storage front-end ports." Let's evaluate: - Option A: Correct. Mismatched FC port rates between the host and switch cause link failures. - Option B: Correct. Faulty or loose optical fibers disrupt FC connectivity. - Option C: Correct. Mismatched optical module rates between host and storage ports lead to link exceptions. - Option D: Incorrect. IP address settings are relevant to iSCSI, not FC, which uses physical connections. Thus, options A, B, and C are possible causes. Reference: HCIP-Storage V5.5 Training Material, Module 5: Storage System Maintenance and Troubleshooting, Section 5.13: Fibre Channel Troubleshooting*, Huawei Technologies Co., Ltd. ---
H13-624_V5.5 Exam Question 32
An industry customer has purchased several Huawei flash storage devices for service deployment. To improve service data reliability, an engineer configures the HyperReplication feature on the storage devices. If the engineer wants to modify the properties of a remote replication pair, which of the following commands cannot be used? (Choose all that apply)
Correct Answer: A,B,C,D
A and B areHyperMetrocommands, notremote replication pair property modificationcommands, so they cannot be used for this purpose. Huawei documents change hyper_metro_pair general as a command to changeHyperMetro pairattributes, not remote replication pair attributes. C cannot be used because show consistency_group general is only aquery/displaycommand for consistency groups and does not modify any remote replication pair property. D cannot be used to modify pair properties because change remote_replication synchronize is used tostart synchronizationfor a remote replication pair, not to change its attributes/properties.
H13-624_V5.5 Exam Question 33
In Huawei flash storage. If you want to apply the HyperCDP feature to a LUN, you are advised to reserve 5% to 10% of the LUN capacity in the storage pool to which the I UN belongs for storing HyperCDP object data, and configure a protection capacity threshold for the storage pool to stop creating HyperCDP objects or even automatically delete HyperCDP objects when the storage pool capacity is insufficient.
Correct Answer: A
H13-624_V5.5 Exam Question 34
In Huawei all-flash storage, the SmartDedupe and SmartCompression features reduce redundant data space consumption and improve the transmission and storage efficiency of a storage system. Which of the following statements about the features is false?
Correct Answer: C
SmartDedupe and SmartCompression are data reduction technologies in Huawei all-flash storage systems, such as OceanStor Dorado. The *HCIP-Storage V5.5 Training Material (Module 2: Flash Storage Technologies)* provides details: - Option A: True. The material states: "Post-process compression involves writing data to storage media first, then reading it back for compression during idle periods." - Option B: True. The material confirms: "Inline deduplication divides data into blocks and calculates fingerprints to identify duplicates before writing." - Option C: False. The material clarifies: "Similarity-based deduplication, whether inline or background, requires dividing data into blocks to calculate fingerprints for similarity detection. Direct calculation without block division is not supported." This makes the statement incorrect. - Option D: True. The material notes: "Backup storage supports deduplication and compression for file systems to optimize space usage." Thus, option C is false. Reference: HCIP-Storage V5.5 Training Material, Module 2: Flash Storage Technologies, Section 2.9: SmartDedupe and SmartCompression Technologies*, Huawei Technologies Co., Ltd. ---
H13-624_V5.5 Exam Question 35
In Huawei flash storage, the integrated I/O stack of SAN and NAS can be divided into the storage pool layer, space management layer, and data service layer. Which of the following are performance concerns of the space management layer?
Correct Answer: A,B
The integrated I/O stack in Huawei flash storage systems, such as OceanStor Dorado, is divided into layers, with the space management layer handling metadata and resource allocation. The *HCIP-Storage V5.5 Training Material (Module 5: Storage System Maintenance and Troubleshooting)* states: "The space management layer is responsible for metadata operations and space allocation. Key performance concerns include the cache hit ratio of hot metadata, which affects access speed, and CPU usage for background metadata management tasks, which impacts system efficiency." Let's evaluate: - Option A: Correct. The material confirms that the cache hit ratio for hot metadata is critical for reducing latency in the space management layer. - Option B: Correct. High CPU usage in metadata management can bottleneck performance, as noted in the material. - Option C: Incorrect. Failover for protocol receiving threads is a concern for the data service layer, not the space management layer. - Option D: Incorrect. The prefetch algorithm's hit ratio is relevant to the data service layer, not space management. Thus, options A and B are the performance concerns. Reference: HCIP-Storage V5.5 Training Material, Module 5: Storage System Maintenance and Troubleshooting, Section 5.11: I/O Stack and Performance Analysis*, Huawei Technologies Co., Ltd. ---
