The correct answer is that the destination datastore must be compatible with physical RDMs, and the source and target datastores must support SCSI-3 persistent reservations. This is because a physical compatibility RDM passes through all SCSI commands directly to the physical LUN, so the vMotion operation requires the underlying storage to maintain the same SCSI-3 reservation state across the migration to prevent data corruption. On the VMware Certified Professional Data Center Virtualization VCP-DCV exam, this question tests your understanding that Storage vMotion with physical mode RDMs does not require shared storage or the same array, nor does it force the VM to be powered off—a common trap is assuming shared storage is needed. Remember the memory tip: "Physical RDM vMotion needs SCSI-3 PR and a compatible destination, not shared storage or power-off."
VCP-DCV vSphere Performance and Scaling Practice Question
This VCP-DCV practice question tests your understanding of vsphere performance and scaling. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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.
Which TWO conditions must be met for a successful Storage vMotion of a virtual machine with a raw device mapping (RDM) in physical compatibility mode?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The source and target datastores support SCSI-3 persistent reservations.
Option A is correct because the source and target datastores must support SCSI-3 persistent reservations. Option D is correct because the destination datastore must be compatible with physical RDMs. Option B is incorrect because RDM vMotion does not require shared storage. Option C is incorrect because the VM can be powered on. Option E is incorrect because RDM vMotion does not require the same storage array.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
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 source and target datastores support SCSI-3 persistent reservations.
Why this is correct
Physical RDMs use SCSI-3 reservations.
Related concept
Static NAT maps one inside address to one outside address.
✗
The source and target are on the same storage array.
Why it's wrong here
vMotion can cross array boundaries with appropriate configuration.
✓
The destination datastore is compatible with physical RDMs.
Why this is correct
Not all datastores support physical RDMs.
Related concept
Static NAT maps one inside address to one outside address.
✗
The virtual machine is using a shared virtual SCSI controller.
Why it's wrong here
Shared controllers are not required for RDM vMotion.
✗
The virtual machine must be powered off.
Why it's wrong here
Storage vMotion can be performed online.
Common exam traps
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
Static NAT maps one inside address to one outside address.
PAT allows many inside hosts to share one public address using ports.
Inside local and inside global describe the private and translated addresses.
NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
→Identify inside and outside interfaces first.
→Check whether the scenario needs static NAT, dynamic NAT or PAT.
→Do not confuse NAT matching ACLs with normal packet-filtering intent.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
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.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related VCP-DCV NAT questions on configuration and troubleshooting.
vSphere Performance and Scaling — This question tests vSphere Performance and Scaling — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: The source and target datastores support SCSI-3 persistent reservations. — Option A is correct because the source and target datastores must support SCSI-3 persistent reservations. Option D is correct because the destination datastore must be compatible with physical RDMs. Option B is incorrect because RDM vMotion does not require shared storage. Option C is incorrect because the VM can be powered on. Option E is incorrect because RDM vMotion does not require the same storage array.
What should I do if I get this VCP-DCV question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related VCP-DCV NAT questions on configuration and troubleshooting.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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Question Discussion
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