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Question 33 - NCS-Core discussion

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An administrator protected a DB VM running on a Nutanix cluster with NearSync Replication, which schedules to repeat every 15 minutes to a second site. The daily change rate is low. During nightly backups, the replication window is missed due to write volume.

Which two options describe the expected behavior? (Choose two.)

A.
NearSync stops working and fails over to the remote site.
Answers
A.
NearSync stops working and fails over to the remote site.
B.
Protection Domain transitions back to the hourly schedule.
Answers
B.
Protection Domain transitions back to the hourly schedule.
C.
The Administrator needs to re-enable it manually.
Answers
C.
The Administrator needs to re-enable it manually.
D.
The system continuously tries to get to the NearSync schedule.
Answers
D.
The system continuously tries to get to the NearSync schedule.
Suggested answer: B, D

Explanation:

When a NearSync Replication window is missed due to high write volume during nightly backups, the expected behavior of the system is to adjust the replication schedule temporarily and continuously attempt to return to the configured NearSync schedule. The correct answers are:

Option B, 'Protection Domain transitions back to the hourly schedule.' If the NearSync cannot maintain the 15-minute schedule due to excessive write volume, it may temporarily fall back to a less frequent schedule, such as hourly, to stabilize.

Option D, 'The system continuously tries to get to the NearSync schedule.' NearSync is designed to handle transient high-load situations by trying to catch up and revert to the pre-set NearSync schedule as conditions allow.

Reference: These behaviors are outlined in the Nutanix documentation for NearSync, which describes how the system manages periods of high I/O and missed replication windows.

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asked 23/09/2024
Mahdi Far
32 questions
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