The correct choice is to configure each host with local NVMe drives and use vSphere Local Storage. This design wins because VDI workloads are extremely I/O-intensive and latency-sensitive, and local NVMe eliminates the network and SAN controller overhead that adds milliseconds of delay, delivering the lowest possible latency for each VM’s 100 IOPS requirement. On the VCP-DCV exam, this scenario tests your understanding of storage trade-offs: shared storage adds complexity and contention, while local flash scales linearly with host count and avoids fabric costs. A common trap is assuming a SAN or vSAN is always needed for VDI, but for modest IOPS per VM, local NVMe provides both performance and scalability without over-engineering. Remember the mnemonic “LNVMe for LNV” — Local NVMe for Low Network Variance.
VCP-DCV vSphere Performance and Scaling Practice Question
This VCP-DCV practice question tests your understanding of vsphere performance and scaling. 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 the storage configuration for a new cluster of 10 hosts running VDI workloads. Each VM requires approximately 100 IOPS for typical operation. Which storage design best balances performance and scalability?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "best"
Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Configure each host with local NVMe or SSD drives and use vSphere Local Storage.
Option C is correct because VDI workloads are highly I/O-intensive and latency-sensitive, and local NVMe or SSD drives provide the lowest possible latency by eliminating network and SAN controller overhead. vSphere Local Storage allows each host to independently serve its VMs, which scales linearly with the number of hosts and avoids the contention and cost of a shared storage fabric. This design balances performance and scalability for a 10-host cluster where each VM requires only 100 IOPS, as local flash easily meets that demand without the complexity of a SAN or vSAN.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Implement vSAN using HDDs with a flash cache tier.
Why it's wrong here
HDDs still have higher latency than all-flash VDI requirements.
✗
Deploy a centralized all-flash FC SAN with multiple paths.
Why it's wrong here
Centralized SAN may become a bottleneck as VDI scales.
✓
Configure each host with local NVMe or SSD drives and use vSphere Local Storage.
Why this is correct
Local flash storage provides high IOPS per host and scales with hosts.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Use a single NFS datastore on a large spinning-disk array.
Why it's wrong here
Single datastore creates a bottleneck and lacks IOPS.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often assume VDI requires shared storage for features like vMotion or HA, but vSphere Local Storage with host-based replication or vSAN can provide those capabilities, and for pure performance/scalability, local flash is superior to any shared HDD or SAN design.
Detailed technical explanation
How to think about this question
Under the hood, VDI workloads generate a high ratio of random read/write operations (e.g., boot storms, user logins), which HDDs handle poorly due to seek time. Local NVMe drives leverage PCIe Gen4/5 lanes and NVMe queues (up to 64K commands per queue) to deliver sub-millisecond latency, while vSphere Local Storage uses VMFS or vSAN Direct to manage local disks without network overhead. In a real-world scenario, a 10-host cluster with 50 VMs per host (500 total) would require only 50,000 IOPS, easily met by a single NVMe drive per host, making shared storage overkill.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
vSphere Performance and Scaling — This question tests vSphere Performance and Scaling — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Configure each host with local NVMe or SSD drives and use vSphere Local Storage. — Option C is correct because VDI workloads are highly I/O-intensive and latency-sensitive, and local NVMe or SSD drives provide the lowest possible latency by eliminating network and SAN controller overhead. vSphere Local Storage allows each host to independently serve its VMs, which scales linearly with the number of hosts and avoids the contention and cost of a shared storage fabric. This design balances performance and scalability for a 10-host cluster where each VM requires only 100 IOPS, as local flash easily meets that demand without the complexity of a SAN or vSAN.
What should I do if I get this VCP-DCV question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
Yes — watch for: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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