CompTIA
CV0-003 · Question #550
CV0-003 Question #550: Real Exam Question with Answer & Explanation
The correct answer is B: The application is not compatible with the new settings. When CPU and memory metrics show no saturation, degraded performance after a storage policy change indicates the application is not functioning correctly under the new storage behavior.
Troubleshooting
Question
Due to a policy change, a few of a customer's application VMs have been migrated to synchronously replicated storage. The customer now reports that performance is lower. The systems administrator checks the resource usage and discovers CPU utilization is at 60% and available memory is at 30%. Which of the following is the MOST likely cause?
Options
- AThere is not enough vCPU assigned
- BThe application is not compatible with the new settings
- CThe new configuration is adding latency
- DThe memory of the VM is underallocated
Explanation
When CPU and memory metrics show no saturation, degraded performance after a storage policy change indicates the application is not functioning correctly under the new storage behavior.
Common mistakes.
- A. CPU utilization at 60% is well below saturation, so insufficient vCPU allocation cannot explain the observed performance degradation.
- C. Although synchronous replication does inherently add I/O latency, the resource metrics show no saturation point that would make raw latency the primary root cause over application incompatibility.
- D. With 30% memory still available the VM is not memory-constrained, so underallocation of memory is not driving the performance issue.
Concept tested. Synchronous storage replication impact on VM application performance
Topics
#synchronous replication#storage latency#VM performance#storage migration
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