VCP-DCV Configure and Manage vSphere Storage Practice Question
An administrator attempts to expand a VMFS datastore by increasing the LUN size, but the expand option is grayed out. What could be the reason?
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
✓
The LUN is shared with another datastore
If the LUN is shared with another datastore, it cannot be expanded because a LUN can belong to only one datastore. Block size does not affect expansion; RDMs are not used for VMFS; rescan is unrelated to the grayed-out 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.
- ✗
The datastore is using block size 2 MB
Why it's wrong here
Block size does not prevent expansion.
- ✓
The LUN is shared with another datastore
Why this is correct
A LUN can only be used by one datastore; sharing prevents expansion.
- ✗
The host is not rescanned
Why it's wrong here
A rescan is needed after LUN size change, but does not cause the expand option to be grayed out.
- ✗
The datastore is on a RDM
Why it's wrong here
RDMs are for VM disks, not for VMFS datastores.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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