H13-624_V5-5 practice question 13 of 25

Assume a financial customer purchases a Huawei OceanStor Pacific scale-out storage system for future service deployment. Which statement is false about software installation of the storage system?

Answer options

A: During block service installation, if management nodes are deployed where compute and storage nodes are converged, the number of vCPUs on each converged compute and storage node must be greater than or equal to 20.

B: During block service installation, if converged deployment of storage and compute nodes is required, the difference between the disk quantities on any two nodes in the same storage pool cannot be greater than 2 or 30% of the disk quantity on the node having most disks.

C: If wizard-based software installation is used, an engineer must manually add nodes, configure networks, and create a control cluster on DeviceManager, and then install the OceanStor Pacific series software. Correct answer

D: To install the Distributed Parallel Client (DPC), the memory required for running the DPC software on a compute node must be greater than or equal to 20 GB.

Correct Answer:

C. If wizard-based software installation is used, an engineer must manually add nodes, configure networks, and create a control cluster on DeviceManager, and then install the OceanStor Pacific series software.

Explanation

According to the “OceanStor Pacific Series Software Installation Guide”, wizard-based installation automatically discovers all powered-on nodes through the BMC network. The engineer only needs to select the discovered nodes and then follow the wizard to configure service networks and create the control cluster. Therefore the statement that the engineer “must manually add nodes” is false. The remaining options match the official planning guides: ≥20 vCPUs are required for converged management nodes, disk-quantity difference in the same pool must be ≤2 or 30 %, and a compute node that will run DPC must have at least 20 GB free memory.

Why Incorrect

A – Requirement in planning guide: converged management node ≥20 vCPUs. B – Disk-count balance rule (≤2 or 30 %) is explicitly stated for converged pools. D – DPC installation guide specifies available memory ≥20 GB on each compute node.

References

1. Huawei. “OceanStor Pacific Series Software Installation Guide”, Issue 02 (2023-04-30), 4.3 “Wizard-based Installation”, p.36-38.

2. Huawei. “OceanStor Pacific Series Block Service Deployment Guide”, Issue 03 (2023-05-31), 2.2.2 “Hardware Resource Requirements”, Table 2-3.

3. Huawei. “OceanStor Pacific Series Block Service Deployment Guide”, 4.1 “Storage-Pool Planning”, Rule 3, p.52.

4. Huawei. “OceanStor Pacific Distributed Parallel Client User Guide”, Issue 05 (2023-06-30), 3.2 “Compute Node Requirements”, bullet 2.

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