VCP-VCF Administrator 2024 Question 242
Select 2You are a VMware Cloud Foundation Administrator managing a vSAN cluster. After a recent storage policy change, you notice a significant increase in resynchronization traffic, leading to performance degradation on the cluster. Which actions should you take to address this issue and optimize cluster performance?
- A
Increase the Stripe Width in the storage policy to reduce resynchronization overhead.
- B
Use the vSAN Performance Service to identify disks or nodes with excessive I/O latency.
- C
Pause the resynchronization process using the vSAN resync throttling feature.
- D
Verify and adjust the Repair Delay Timer to allow more time for transient issues to resolve before initiating resync.
- E
Migrate virtual machines to another cluster to reduce the load on the current vSAN cluster.
Show answer and explanation
Correct answers: B, D
Explanation
To mitigate performance degradation caused by increased resynchronization traffic, it is essential to diagnose the source of the issue using the vSAN Performance Service and make adjustments such as modifying the Repair Delay Timer to handle transient issues more effectively. These actions help optimize cluster performance without introducing additional risks or unnecessary workload.
- A. Incorrect.
Increasing the Stripe Width in the storage policy will increase the number of components per object, potentially increasing the resynchronization workload rather than reducing it.
- B. Correct.
Using the vSAN Performance Service to identify disks or nodes with excessive I/O latency is critical for diagnosing and addressing performance bottlenecks.
- C. Incorrect.
Pausing resynchronization entirely is not recommended as it could lead to data unavailability risks in the event of additional failures.
- D. Correct.
Adjusting the Repair Delay Timer can help prevent unnecessary resynchronization caused by transient issues, reducing the overall impact on performance.
- E. Incorrect.
Migrating virtual machines to another cluster is a drastic step and is generally unnecessary unless there is a critical failure or persistent performance issue that cannot be resolved.