Huawei Certified ICT Professional – Storage (HCIP-Storage) — Question 7

A company deploys a Huawei distributed storage system to build a new online transaction system. The company deploys database application software of the transaction system on virtual machines (VMs). Multiple data volumes are mounted to VM. What are the best methods to ensure data restoration reliability?

Answer options

• A. All volume snapshots must be created at the same time.
• B. A snapshot and a consistency snapshot comply with the dependency consistency principle.
• C. Multiple data volumes used by the database do not have to use the consistency snapshot.
• D. Different data volumes need to be restored in sequence.

Correct answer: D

Explanation

The correct answer is D because restoring different data volumes in sequence helps maintain data integrity and ensures that dependencies between the volumes are respected. Option A is incorrect as simultaneous snapshots may not capture the state accurately. Option B is misleading since while consistency snapshots are important, it does not directly address restoration reliability. Option C is wrong because neglecting consistency snapshots can lead to data inconsistencies during restoration.