VCP-VVF Troubleshoot And Optimize Practice Question
An administrator notices that vSphere DRS is failing to migrate virtual machines automatically to balance cluster load. Upon checking the cluster configuration, DRS is enabled and set to Fully Automated. What is a likely cause preventing DRS from executing migrations?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Conflicting VM-to-Host or VM-to-VM affinity rules that prevent placement on the targeted balanced hosts.
Host or VM affinity rules, or anti-affinity rules, can restrict DRS movement. If rules conflict or if VMs have specific hardware dependencies (e.g., connected USB devices or strict placement rules), DRS will suppress migrations.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Enhanced vMotion Compatibility (EVC) mode is set to a baseline higher than the host CPUs.
Why it's wrong here
An invalid EVC baseline prevents powering on VMs or joining hosts, not DRS migration execution.
- ✓
Conflicting VM-to-Host or VM-to-VM affinity rules that prevent placement on the targeted balanced hosts.
Why this is correct
Affinity and anti-affinity rules take precedence over load balancing recommendations and can block DRS from migrating workloads.
- ✗
HA admission control is disabled in the cluster.
Why it's wrong here
HA admission control protects failover capacity but does not govern DRS load balancing logic.
- ✗
The vCenter inventory service database is missing the DRS license key.
Why it's wrong here
vSphere Foundation includes fully featured DRS; license absence would disable the feature entirely rather than silently block migrations.
About these practice questions
This VCP-VVF question is part of Courseiva's 517-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official VMware exam blueprint
This VCP-VVF practice question is part of Courseiva's free VMware certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the VCP-VVF exam.