Scenario Analysis:

The VM is protected with NearSync Replication, scheduled every 15 minutes, but misses the replication window during nightly backups due to high write volumes.

Expected Behavior:

Option B: Protection Domain transitions back to hourly schedule:

NearSync automatically falls back to a less frequent replication schedule, such as hourly, when it cannot keep up with the 15-minute schedule due to write volume or other issues.

Option D: The system continuously tries to get to the NearSync schedule:

The system does not give up on the NearSync schedule. Instead, it keeps attempting to return to the 15-minute interval as soon as conditions allow (e.g., write volume decreases)​​.

Behavior Explanation:

Hourly Schedule Transition:

When the high write volume prevents the 15-minute replication, NearSync transitions to an hourly schedule to ensure that replication continues, albeit at a reduced frequency.

Continuous Attempt to Return to NearSync:

The system monitors conditions and makes continuous efforts to revert to the NearSync schedule as soon as it becomes feasible.

Conclusion:

The correct options that describe the expected behavior are B and D.

References: Nutanix Bible explanation of NearSync behavior under high write volumes and missed replication windows.