VCP-VMC 2024 Question 182
Single answerA cloud administrator is troubleshooting a performance issue in a VMware Cloud environment. The application team has reported slow read and write speeds on a critical workload running in a vSphere cluster. The administrator suspects the issue is related to the storage subsystem. Which action should the administrator take to determine if storage performance is the root cause?
- A
Use vRealize Operations Manager to analyze storage latency and IOPS for the affected virtual machine.
- B
Run a vSphere HA failover test to ensure storage redundancy is functioning.
- C
Use vSAN Performance Service to check disk group performance and analyze read/write patterns.
- D
Modify the Storage I/O Control (SIOC) threshold to prioritize the affected virtual machine.
Show answer and explanation
Correct answer: A
Explanation
To determine storage performance issues in a VMware Cloud environment, monitoring tools like vRealize Operations Manager should be used first. It provides insights into storage latency and IOPS, which are key indicators of storage performance. Other actions, such as modifying SIOC or using vSAN Performance Service, may be useful in specific scenarios but are not the first step in diagnosing storage performance problems.
- A. Correct.
Using vRealize Operations Manager allows the administrator to monitor storage latency and IOPS at a detailed level, helping to determine if storage performance is the bottleneck.
- B. Incorrect.
Running a vSphere HA failover test is used for validating high availability and redundancy but does not directly address storage performance issues.
- C. Incorrect.
The vSAN Performance Service is specifically for vSAN-based storage environments. If the workload is not on vSAN, this option would not apply.
- D. Incorrect.
Modifying the Storage I/O Control (SIOC) threshold can help manage storage contention but should only be done after identifying the root cause of the performance issue.