VCP-DCV Configure and Manage vSphere Storage Practice Question
A vSphere administrator has a VMFS6 datastore that is running low on space. The storage array has additional unallocated LUNs. The administrator attaches a new 2 TB LUN to the ESXi host. What is the correct procedure to increase the datastore capacity?
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 'Increase datastore capacity' wizard to add the LUN as an extent
The correct procedure is to use the 'Increase datastore capacity' wizard to add the new LUN as an extent to the existing VMFS6 datastore. VMFS6 supports online extension, allowing the datastore to be expanded without unmounting or disrupting running VMs. Option B is incorrect because unmounting and extending the partition is unnecessary; VMFS6 handles this dynamically. Option C is incorrect because recreating the datastore with a larger block size is disruptive and not required—adding an extent achieves the capacity increase. Option D is incorrect because creating a new datastore and migrating VMs is unnecessary and adds complexity; the existing datastore can be extended seamlessly.
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 'Increase datastore capacity' wizard to add the LUN as an extent
Why this is correct
VMFS can be extended online by adding an extent.
- ✗
Unmount the datastore, expand the VMFS partition, then remount
Why it's wrong here
Unmounting is disruptive and not required for VMFS6.
- ✗
Recreate the datastore with a larger block size and restore from backup
Why it's wrong here
Destructive and unnecessary.
- ✗
Create a new datastore on the LUN and use Storage vMotion to migrate VMs
Why it's wrong here
Creating a new datastore on the 2 TB LUN and using Storage vMotion to migrate VMs would leave the original VMFS6 datastore still at low capacity, failing to increase its space. This is tempting because Storage vMotion is the standard tool for relocating VM storage non-disruptively, and it would be correct if the goal were to move workloads off a failing datastore rather than extending the existing one.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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