The correct configuration is to create a VM-to-VM affinity rule in the datastore cluster. This Storage DRS rule ensures that specified virtual machines are always placed together on the same datastore, honoring the requirement to keep VMs together despite varying I/O patterns. Storage DRS affinity rules directly control initial placement and ongoing load-balancing migrations, overriding the default I/O and space-based recommendations. On the VMware Certified Professional Data Center Virtualization VCP-DCV exam, this question tests your understanding of Storage DRS rule types, where affinity binds VMs together and anti-affinity separates them—a common trap is confusing the two or mistakenly selecting SIOC, which manages storage I/O queues, not placement. Remember: affinity = together, anti-affinity = apart. A useful memory tip is to think of “affinity” as “attached,” keeping VMs on the same datastore like a pair of magnets.
VCP-DCV Configure and Manage vSphere Storage Practice Question
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.
A vSphere administrator is planning a Storage DRS implementation for a datastore cluster containing multiple VMFS datastores. The VMs have various I/O patterns. Some VMs should always remain together on the same datastore. Which configuration should be used?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "always"
Why it matters: Absolute qualifier. An answer using 'always' is only correct if there are genuinely no exceptions — absolute statements are often wrong in networking.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Create a VM-to-VM affinity rule in the datastore cluster.
Storage DRS affinity rules allow you to keep VMs together (VM-to-VM affinity) or separate. Option B is incorrect because anti-affinity would separate them. Option C is incorrect because SIOC is for I/O control, not placement. Option D is incorrect because per-datastore rules don't exist; Storage DRS rules are at the datastore cluster level.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
Create a VM-to-VM affinity rule in the datastore cluster.
Why this is correct
Correct: Affinity rule ensures VMs are placed on the same datastore.
Clue confirmation
The clue word "always" in the question point toward this answer.
Related concept
Static NAT maps one inside address to one outside address.
✗
Set individual datastore affinity rules on each host.
Why it's wrong here
Incorrect: Storage DRS rules are applied to the datastore cluster, not per host.
✗
Apply Storage I/O Control with high shares to the VMs.
Why it's wrong here
Incorrect: SIOC does not control placement.
✗
Create a VM-to-VM anti-affinity rule in the datastore cluster.
Why it's wrong here
Incorrect: Anti-affinity would keep VMs separate.
Common exam traps
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
Static NAT maps one inside address to one outside address.
PAT allows many inside hosts to share one public address using ports.
Inside local and inside global describe the private and translated addresses.
NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
→Identify inside and outside interfaces first.
→Check whether the scenario needs static NAT, dynamic NAT or PAT.
→Do not confuse NAT matching ACLs with normal packet-filtering intent.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Real-world example
How this comes up in practice
A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
What to study next
Got this wrong? Here's your next step.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related VCP-DCV NAT questions on configuration and troubleshooting.
Configure and Manage vSphere Storage — This question tests Configure and Manage vSphere Storage — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Create a VM-to-VM affinity rule in the datastore cluster. — Storage DRS affinity rules allow you to keep VMs together (VM-to-VM affinity) or separate. Option B is incorrect because anti-affinity would separate them. Option C is incorrect because SIOC is for I/O control, not placement. Option D is incorrect because per-datastore rules don't exist; Storage DRS rules are at the datastore cluster level.
What should I do if I get this VCP-DCV question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related VCP-DCV NAT questions on configuration and troubleshooting.
Are there clue words in this question I should notice?
Yes — watch for: "always". Absolute qualifier. An answer using 'always' is only correct if there are genuinely no exceptions — absolute statements are often wrong in networking.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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