VCP-DCV Configure and Manage vSphere Storage Practice Question
A vSphere administrator needs to add a new VMFS6 datastore to an ESXi 7.0 host. The storage array has presented a 2 TB LUN to the host. The administrator wants to ensure the datastore uses the entire LUN and is aligned correctly. Which action should the administrator take?
⚠ Common exam trap
The trap here is thinking that manual partitioning or leaving unallocated space is required for alignment or snapshot space, when the vSphere Client handles alignment automatically.
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
✓
Use the vSphere Client to create a new VMFS6 datastore and select the entire LUN as the extent.
The vSphere Client's datastore creation wizard automatically aligns VMFS6 partitions to the optimal 1 MB boundary and uses the entire LUN when selected. This ensures correct alignment and full capacity utilization without manual intervention. Manual partitioning or leaving unallocated space is unnecessary and can introduce errors.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Use the ESXi Shell to run partedUtil to create a GPT partition and then format it with vmkfstools.
Why it's wrong here
While it is possible to manually partition and format a LUN using partedUtil and vmkfstools, this approach is error-prone and not recommended for typical datastore creation. Manual partitioning can lead to misalignment if the starting sector is not chosen correctly. The vSphere Client automates alignment and uses the entire LUN, making it the preferred method.
- ✗
Use the vSphere Client to create a new VMFS6 datastore but specify a smaller extent to leave room for snapshots.
Why it's wrong here
Snapshots are stored within the VMFS datastore itself and do not require unallocated space on the LUN. Creating a smaller extent would waste capacity and is unnecessary. VMFS6 datastores can be expanded later if needed, but leaving unallocated space does not benefit snapshot functionality. The entire LUN should be used for maximum capacity.
- ✗
Use the vSphere Client to create a new VMFS6 datastore and manually set the partition alignment to 64 KB for performance.
Why it's wrong here
VMFS6 automatically aligns partitions to 1 MB, which is the recommended alignment for modern storage arrays. Manually setting a 64 KB alignment is not only unnecessary but could be incorrect for the array's geometry, potentially causing performance degradation. The vSphere Client does not provide an option to manually set alignment during datastore creation because it is handled automatically.
- ✓
Use the vSphere Client to create a new VMFS6 datastore and select the entire LUN as the extent.
Why this is correct
Creating a VMFS6 datastore through the vSphere Client automatically handles partition alignment and uses the entire LUN if selected. VMFS6 supports large volumes and automatically aligns partitions to the recommended 1 MB boundary. This is the simplest and most reliable method to ensure correct alignment and full LUN utilization without manual partitioning.
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official VMware exam blueprint
This VCP-DCV practice question is part of Courseiva's free VMware certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the VCP-DCV exam.