VCP-VVF Vmware Vsphere Foundation Fundamentals Practice Question
A vSphere Foundation administrator is configuring Storage DRS (SDRS) on a datastore cluster containing VMFS datastores. The administrator wants to ensure that SDRS makes automatic migration recommendations based on space utilization and I/O latency thresholds. Which requirement must be met for Storage DRS to generate automatic I/O latency-based migration recommendations?
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
✓
Storage I/O Control (SIOC) must be enabled on the datastore cluster.
Storage DRS requires Storage I/O Control (SIOC) to be enabled on the datastore cluster to monitor and collect I/O latency metrics across all participating datastores before it can factor I/O bottlenecks into migration recommendations.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The cluster must have vSphere Storage APIs - Array Integration (VAAI) hardware acceleration disabled.
Why it's wrong here
VAAI accelerates storage operations and should be enabled, not disabled, for optimal SDRS performance.
- ✗
All datastores in the cluster must be formatted with VMware vSAN file systems.
Why it's wrong here
Storage DRS is used for VMFS and NFS datastores; vSAN manages its own storage layout automatically without SDRS.
- ✗
Storage vMotion must be licensed separately as an add-on to vSphere Foundation.
Why it's wrong here
Storage vMotion is included natively within vSphere Foundation core capabilities.
- ✓
Storage I/O Control (SIOC) must be enabled on the datastore cluster.
Why this is correct
SIOC is mandatory for Storage DRS to monitor I/O latency and execute performance-based load balancing.
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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
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