D-ECS-DS-23 · Question #173
VDCA owns ECS namespace N and contains bucket B. VDCA owns bucket B. Bucket B is replicated to VDCB. During an outage at VDCA, the application connects to VDCB. What are two expected behaviors of…
The correct answer is C. It can list the buckets in namespace N. D. It can access the contents of bucket B by explicitly referencing the bucket. When bucket B is replicated from VDCA to VDCB in an ECS replication group, both the bucket data and the associated namespace metadata are replicated. This means VDCB holds a full, functional copy of namespace N's structure (enabling bucket listing) as well as the actual object…
Question
VDCA owns ECS namespace N and contains bucket B. VDCA owns bucket B. Bucket B is replicated to VDCB. During an outage at VDCA, the application connects to VDCB. What are two expected behaviors of the application in this situation? (Select 2)
Options
- AIt cannot list the buckets in namespace N.
- BIt cannot access the contents of bucket B by explicitly referencing the bucket.
- CIt can list the buckets in namespace N.
- DIt can access the contents of bucket B by explicitly referencing the bucket.
How the community answered
(42 responses)- A17% (7)
- B21% (9)
- C62% (26)
Explanation
When bucket B is replicated from VDCA to VDCB in an ECS replication group, both the bucket data and the associated namespace metadata are replicated. This means VDCB holds a full, functional copy of namespace N's structure (enabling bucket listing) as well as the actual object data in bucket B (enabling direct access). Even with VDCA completely offline, VDCB can independently satisfy both types of requests because replication is not just a data mirror - it includes the namespace layer needed to resolve bucket listings.
Why A is wrong: The namespace N metadata is part of what gets replicated to VDCB, so listing buckets within that namespace remains possible at the replica site during an outage.
Why B is wrong: Since bucket B itself is replicated (not just referenced) to VDCB, explicitly addressing bucket B from VDCB works - the data lives there locally.
Memory tip: Think "replication = full copy, not a redirect." A replicated bucket brings its namespace context with it, so the replica VDC behaves as a self-sufficient owner for both metadata (list) and data (access) operations during a primary-site outage.
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