VCP-DCV vSphere Architecture, Products and Solutions Practice Question
An organization has a vSphere 7.0 environment with three ESXi hosts (Host A, B, C) in a cluster. Each host has 256 GB of RAM and 2 sockets with 16 cores each. The cluster hosts 50 VMs with varying resource requirements. The administrator enabled vSphere DRS and set the migration threshold to 3 (conservative). Recently, the administrator noticed that Host A's memory usage averages 90%, while Host B and C average 50%. The administrator wants to balance the memory load without causing unnecessary vMotion migrations. The VMs on Host A are critical, and the administrator wants to avoid manually migrating them. The cluster has vSphere HA enabled with admission control set to reserve resources for one host failure. The administrator decides to adjust DRS settings. Which course of action should the administrator take to improve memory load balancing while minimizing migrations?
⚠ Common exam trap
Candidates often confuse 'conservative' with 'better for stability' and choose to lower the threshold (Option A), not realizing that a higher threshold (more aggressive) is needed to actively correct an existing imbalance, while a lower threshold only reduces unnecessary migrations when the cluster is already balanced.
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
✓
Increase the DRS migration threshold to a more aggressive setting (e.g., level 4 or 5) to encourage more migrations for load balancing.
Increasing the DRS migration threshold to a more aggressive setting (e.g., level 4 or 5) will cause DRS to generate more frequent and stronger recommendations for vMotion migrations, actively balancing the memory load across the cluster. Since Host A's memory usage is at 90% and the other hosts are at 50%, a higher threshold will trigger migrations to relieve the imbalance without manual intervention, while still respecting the conservative starting point (level 3). This aligns with the administrator's goal of improving load balancing without manually migrating critical VMs.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Decrease the DRS migration threshold to level 1 to minimize migrations.
Why it's wrong here
This would make DRS less aggressive, reducing the chance of balancing.
- ✓
Increase the DRS migration threshold to a more aggressive setting (e.g., level 4 or 5) to encourage more migrations for load balancing.
Why this is correct
A more aggressive threshold will cause DRS to recommend more migrations to balance memory.
- ✗
Create an affinity rule to keep VMs on Host A, as they are critical.
Why it's wrong here
This would prevent DRS from moving VMs, worsening the imbalance.
- ✗
Disable DRS and manually migrate VMs from Host A to Host B and C during a maintenance window.
Why it's wrong here
Manual migration requires downtime and is not automated.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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