2V0-21.23 Question 387
Single answerAn administrator is tasked with troubleshooting a performance issue in a vSphere environment. They suspect that a datastore is experiencing latency. After reviewing the environment, they notice that the affected datastore is an NFS datastore connected to multiple ESXi hosts. Which action should the administrator take to identify and resolve the issue?
- A
Verify the network configuration and ensure that the NFS traffic is on a dedicated VLAN.
- B
Increase the number of Storage I/O Control shares assigned to the datastore.
- C
Migrate the affected virtual machines to another datastore using Storage vMotion.
- D
Enable vSphere High Availability (HA) to automatically restart virtual machines on a different host.
Show answer and explanation
Correct answer: A
Explanation
NFS datastore performance is often impacted by network issues. Ensuring that NFS traffic is isolated and properly configured on a dedicated VLAN can help improve performance and reduce latency. Troubleshooting at the network layer is a critical step in diagnosing and resolving such issues.
- A. Correct.
NFS performance issues can often be caused by network misconfigurations or congestion. Verifying and isolating NFS traffic on a dedicated VLAN helps ensure proper bandwidth and reduce latency.
- B. Incorrect.
While Storage I/O Control can help manage contention, it does not directly address the root cause of an NFS datastore latency issue. Increasing shares may not resolve underlying network problems.
- C. Incorrect.
Migrating virtual machines to another datastore using Storage vMotion does not address the root cause of latency and could result in similar performance problems if the issue is network-related.
- D. Incorrect.
vSphere High Availability (HA) is designed for failover scenarios, not for resolving datastore performance issues. Enabling HA won't help with latency on an NFS datastore.