350-601 Storage Network Practice Question
A storage engineer is planning a disaster recovery solution that requires zero data loss in the event of a site failure. The storage arrays support both synchronous and asynchronous replication. Which replication type should be chosen to meet the requirement?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Synchronous replication
Synchronous replication writes data to both local and remote storage before acknowledging the write, ensuring zero data loss (RPO=0). Asynchronous replication may have some data loss depending on the lag.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Asynchronous replication
Why it's wrong here
Asynchronous replication may have data loss if the primary site fails before the data is replicated.
- ✗
Snapshot-based replication
Why it's wrong here
Snapshots are point-in-time copies and do not provide continuous replication.
- ✓
Synchronous replication
Why this is correct
Synchronous replication ensures zero data loss by committing writes to both sites before acknowledgement.
- ✗
Thin provisioning
Why it's wrong here
Thin provisioning optimizes storage utilization, not replication.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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