D-UN-OE-23 · Question #54
A storage administrator needs to test a new version of an application loaded on a secondary host. The administrator must use existing data contained on a LUN provisioned from a Dell Unity XT to a…
The correct answer is C. Create a Snapshot of the LUN. Creating a snapshot of the LUN (C) is correct because a Dell Unity XT snapshot is a point-in-time, space-efficient copy - it uses redirect-on-write technology so it only stores changed blocks, not the full dataset. The snapshot can be attached to the secondary host, giving the…
Question
A storage administrator needs to test a new version of an application loaded on a secondary host. The administrator must use existing data contained on a LUN provisioned from a Dell Unity XT to a primary host. Which approach satisfies the requirement and provides space efficiency?
Options
- ACreate an Asynchronous Replication session for the LUN.
- BCreate a Synchronous Replication session for the LUN.
- CCreate a Snapshot of the LUN.
- DCreate a Snapshot of the LUN.
How the community answered
(49 responses)- A18% (9)
- B6% (3)
- C71% (35)
- D4% (2)
Explanation
Creating a snapshot of the LUN (C) is correct because a Dell Unity XT snapshot is a point-in-time, space-efficient copy - it uses redirect-on-write technology so it only stores changed blocks, not the full dataset. The snapshot can be attached to the secondary host, giving the tester access to real production data without impacting the primary host or consuming a full copy of storage.
Distractors:
- A & B (Async/Sync Replication): Both replication types are disaster recovery tools designed to mirror data to another system continuously. They require a full data footprint on the target, are not space-efficient, and are designed for failover - not application testing.
- D: This appears to be a duplicate of C in the question (likely a typo for "Clone"). A LUN Clone is a full independent copy, which satisfies the data access requirement but fails the space efficiency requirement since it consumes capacity equal to the source LUN.
Memory tip: When you see "existing data + space efficiency + testing," think Snapshot - "Snap a shot of the data, save your space." Replication = DR, Snapshots = dev/test.
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