Quick Answer
The answer is the Storage DRS automation level. This setting determines how the system responds to space imbalances across datastores, with options for manual, partially automated, or fully automated behavior. For space balancing specifically, the automation level controls whether migration recommendations are generated for the administrator to approve or applied automatically without intervention. On the VMware Certified Professional Data Center Virtualization VCP-DCV exam, this concept tests your understanding that Storage I/O Control (SIOC), storage policies, and host affinity settings are irrelevant to space-based balancing—they address performance or placement constraints instead. A common trap is confusing the automation level with SIOC or policy-based rules, but remember that space balancing relies purely on the automation threshold and mode. Memory tip: think "Space = Automation Level" — if the goal is balancing capacity, focus on how automated the migrations should be, not on I/O or policy controls.
This VCP-DCV practice question tests your understanding of configure and manage vsphere storage. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
An administrator wants to use Storage DRS to balance space usage across datastores. What must be configured?
Host affinity rules
Why wrong: Host affinity rules control VM placement on hosts, not datastores.
SIOC
Why wrong: SIOC is for I/O control, not space balancing.
Storage DRS automation level
The automation level determines how Storage DRS handles load balancing.
Storage policy
Why wrong: Storage policies are for provisioning, not space balancing.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Storage DRS automation level
The storage DRS automation level (manual, partially automated, fully automated) controls whether migration recommendations are generated or applied automatically. SIOC, policies, and host affinity are not required for space balancing.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Host affinity rules
Why it's wrong here
Host affinity rules control VM placement on hosts, not datastores.
SIOC
Why it's wrong here
SIOC is for I/O control, not space balancing.
Storage DRS automation level
Why this is correct
The automation level determines how Storage DRS handles load balancing.
Related concept
Read the scenario before looking for a memorised answer.
Storage policy
Why it's wrong here
Storage policies are for provisioning, not space balancing.
Common exam traps
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A practitioner preparing for the VCP-DCV exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Identify which VCP-DCV exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Configure and Manage vSphere Storage — study guide chapter
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FAQ
Configure and Manage vSphere Storage — This question tests Configure and Manage vSphere Storage — Read the scenario before looking for a memorised answer..
The correct answer is: Storage DRS automation level — The storage DRS automation level (manual, partially automated, fully automated) controls whether migration recommendations are generated or applied automatically. SIOC, policies, and host affinity are not required for space balancing.
Identify which VCP-DCV exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Read the scenario before looking for a memorised answer.
About these practice questions
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Same concept, more angles
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. Which THREE of the following are true about vSphere Storage DRS?
easyWhy C: Storage DRS can move virtual machine files between datastores (migration), supports affinity rules, and requires vMotion. It does not work only with VMFS (also NFS) and does not always automatically migrate VMs (depending on automation level).
Last reviewed: Jun 24, 2026
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