H13-624_V5.5 Exam Dumps - Huawei HCIP-Storage Questions and Answers

Storage performance metrics are covered in the *HCIP-Storage V5.5 Training Material (Module 5: Storage System Maintenance and Troubleshooting)*: “For large I/O sizes (≥64 KB), throughput is the primary performance indicator, as it measures the data transfer rate, critical for applications like video streaming or large file transfers.” Throughput, measured in MB/s or GB/s, reflects the system’s ability to handle large data volumes, making it the key concern for such scenarios.

Configuring iSCSI block services on Huawei scale-out storage, like OceanStor Pacific, involves specific steps. The *HCIP-Storage V5.5 Training Material (Module 4: Storage Design and Implementation)* states: “To enable iSCSI block services, the engineer must create a block storage pool to allocate storage resources and configure the iSCSI service to set up initiator-target relationships and network parameters.” Let’s evaluate:

- Option A: Required. A block storage pool is necessary to provide the capacity for iSCSI LUNs.

- Option B: Required. Configuring the iSCSI service is essential to enable the protocol and connectivity.

- Option C: Not required. DPC is used for file services, not iSCSI block services.

- Option D: Not required. DPC installation is unrelated to iSCSI configuration.

Thus, options A and B are mandatory.

This question addresses issues with enabling object services in Huawei OceanStor Pacific 9550 systems, as covered in the *HCIP-Storage V5.5 Training Material (Module 3: Scale-Out Storage Technologies)*. The material outlines prerequisites for enabling object services, including time synchronization. Let’s evaluate:

- Option A: Possible cause. The material states: “Manual time adjustments on cluster nodes can cause inconsistencies in conflict handling, preventing object services from being enabled.”

- Option B: Possible cause. The material notes: “Lack of NTP synchronization or use of different NTP sources can lead to time discrepancies, causing object service failures.”

- Option C: Not a cause. The material clarifies: “Namespaces with the same name under the same account are allowed in OceanStor Pacific, as they are managed uniquely per tenant or bucket.” This does not prevent object service enablement.

- Option D: Possible cause. The material confirms: “Inconsistent NTP clocks between the storage cluster and client can disrupt object service operations, as time synchronization is critical for protocols like S3.”

Thus, option C is not a possible cause.

The OceanStor Pacific parallel file system service is designed for high-performance file access. The *HCIP-Storage V5.5 Training Material (Module 3: Scale-Out Storage Technologies)* explains: “The parallel file system aggregates small I/Os in cache to optimize latency and small file utilization. Large I/Os are forwarded to the home node, bypassing scale-out locks to reduce latency. Large I/Os use passthrough mode for direct disk writes, enhancing bandwidth. The system uses dynamic indexing, not fixed-length large-granularity indexes, to adapt to varying I/O patterns.” Let’s evaluate:

- Option A: True. The material confirms small I/O aggregation in cache for better latency.

- Option B: False. The system uses dynamic, not fixed-length, indexing, making this statement incorrect.

- Option C: True. Direct forwarding to the home node reduces lock overhead and latency.

- Option D: True. Passthrough mode for large I/Os improves bandwidth, as per the material.

Thus, option B is false.