H13-624_V5-5 practice question 14 of 25

A financial customer has purchased several Huawei OceanStor Dorado series storage devices for mission-critical service deployment. SmartMigration is configured to migrate services from a source LUN to a target LUN without interrupting host services. Which of the following statements about this feature is false?

Answer options

A: The implementation of a SmartMigration task between heterogeneous storage systems depends on the LUN takeover function provided by SmartVirtualization.

B: When configuring this feature, you must plan the capacities of the source and target LUNs. The capacity of the target LUN must be greater than or equal to that of the source LUN.

C: When configuring this feature, you cannot use a LUN that has been mapped to an application server as the target LUN of a SmartMigration task.

D: The higher the migration rate, the better the host service performance is. Therefore, the highest migration rate can be used when the host service load is heavy. Correct answer

Correct Answer:

D. The higher the migration rate, the better the host service performance is. Therefore, the highest migration rate can be used when the host service load is heavy.

Explanation

SmartMigration shares bandwidth with host I/Os; using the highest migration rate when the host load is heavy will seize resources and degrade service performance, so statement D is false.

Why Incorrect

A. SmartMigration between heterogeneous arrays indeed relies on SmartVirtualization LUN-takeover.
B. Huawei documentation specifies the target LUN capacity must be ≥ source LUN capacity.
C. A target LUN must be unused (unmapped) before it can be selected for SmartMigration.

References

1. Huawei. “OceanStor Dorado Feature Guide V6R6C00”, Chapter 11 SmartMigration, 11.2 “Working Principle”, p. 467-468.

2. Huawei. “OceanStor Dorado Feature Guide V6R6C00”, 11.3 “Usage Precautions”, p. 470-471 (item 4: impact of high migration rate on host I/O).

3. Huawei. “OceanStor Dorado Best Practices – SmartMigration”, Section 3.2, p. 18-19 (capacity and mapping prerequisites).

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