Huawei HyperClone Features and Behavior
Short answer
BC Initial synchronization copies data to the target LUN, and consistency groups ensure multiple pairs remain at a consistent point in time.
Question
Key Takeaways
The main trap is assuming the target LUN is locked until sync finishes; HyperClone allows early mapping for read/write access.
This page explains Huawei HyperClone behavior, confirming that initial synchronization occurs upon pair creation (B) and consistency groups maintain synchronized points in time (C).
Common mistake: Users often select A, mistakenly believing the target LUN must wait for full synchronization before being accessible to hosts.
Expert Analysis
HyperClone is Huawei’s asynchronous remote replication feature, designed for disaster recovery with minimal impact on host I/O. The correct options are B and C.
Initial Synchronization (Option B): When a HyperClone pair is created, the system performs initial synchronization to copy existing data from the source LUN to the target LUN. This is a standard step in establishing the replication relationship. Option B correctly describes this process.
Consistency Groups (Option C): HyperClone supports consistency groups, which allow administrators to group multiple HyperClone pairs together. This ensures that all member pairs replicate data to a consistent point in time, which is critical for applications like databases that span multiple LUNs. Option C accurately reflects this capability.
Target LUN Access (Option A): This option is incorrect because it claims the target LUN can only be accessed after synchronization completes. In reality, Huawei’s HyperClone allows the target LUN to be mapped to hosts for read/write operations even while initial synchronization is ongoing. This feature, often called "split-brain" or "active-active" mode depending on configuration, enables immediate failover readiness. The comment provided confirms that the target LUN becomes available for read/write access after initialization starts, not after completion.
Directionality (Option D): This option is incorrect because HyperClone supports bidirectional synchronization. While typically used for one-way replication (source to target), the technology does not strictly prohibit reverse synchronization; more importantly, the statement "only synchronize... but not the opposite" is too restrictive given the flexibility of storage replication features. However, the primary error in D is usually interpreted as ignoring the ability to break the relationship and write to the target, or simply being factually wrong about the protocol's capabilities compared to B and C which are definitively true.
Therefore, B and C are the correct statements.
Exam Strategy
When evaluating replication questions, distinguish between 'initial sync' and 'ongoing delta sync'. Remember that modern replication solutions often allow target mapping before full sync to reduce RTO. Look for keywords like 'consistency group' which almost always implies coordinated timing across multiple volumes.
Frequently Asked Questions
Can I write to the target LUN during HyperClone initial synchronization?
What is the purpose of a HyperClone consistency group?
Community Votes
50% of anonymous learners picked answer B. Votes are pick records left by other test-takers — they are not the verified answer.
Discussion 1 contributions
Compiled from public community threads and reader submissions, lightly edited for clarity. Handles and vote tallies are shown as recorded, and comments reflect the views of individual contributors.
From public community threads 1
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10c5cfe 👍 1target lun can be available for read and write after the initialization starts. No need to wait for completion.
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