VCP-DCV Configure and Manage vSphere Storage Practice Question
Which TWO conditions require increasing the VMFS heap size on an ESXi host?
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 host is connected to many VMFS datastores (e.g., 64)
VMFS heap is used to track open file descriptors. Increasing the number of VMFS datastores (option A) increases the number of file descriptors needed, as does a large number of virtual machines (option D). Option B (large VMDK) does not directly increase the file descriptor count; it may require large file support but not heap. Option C (vSAN) does not use VMFS. Option E (many snapshots) increases file count, but the heap size is primarily adjusted for many datastores and many VMs, not snapshots per VM.
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 host is connected to many VMFS datastores (e.g., 64)
Why this is correct
Each datastore consumes heap resources.
- ✗
A virtual machine has a VMDK larger than 2 TB
Why it's wrong here
VMDK size does not directly affect VMFS heap.
- ✗
The host is part of a vSAN cluster
Why it's wrong here
vSAN does not use VMFS for its datastores.
- ✓
The host has more than 500 virtual machines
Why this is correct
Many VMs increase the file descriptor count.
- ✗
The host has many snapshots per virtual machine
Why it's wrong here
Snapshots increase file count but not typically heap usage.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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