The answer is to change the SATP to VMW_SATP_ALUA. This is correct because arrays that support Asymmetric Logical Unit Access (ALUA) present both optimized and non-optimized paths to the host, and the VMW_SATP_ALUA path selection policy is designed to distinguish between them, routing I/O through the optimized path while keeping the non-optimized path as a failover. In contrast, the default SATP like DEFAULT_AA treats all paths equally, which can result in only one optimized path being used and the other being ignored, as seen in the exhibit. On the VMware Certified Professional Data Center Virtualization VCP-DCV exam, this scenario tests your understanding of storage path management and the esxcli storage nmp path list output, where a common trap is assuming all SATPs handle ALUA arrays correctly. A helpful memory tip: ALUA stands for Asymmetric—think of it as “one path is the star, the other is the backup,” so you need the SATP that knows which is which.
VCP-DCV Configure and Manage vSphere Storage Practice Question
This VCP-DCV practice question tests your understanding of configure and manage vsphere storage. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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.
Exhibit
Refer to the exhibit.
~ # esxcli storage nmp path list
fc.20000010a1234:5006016844e0a6a6-naa.600601607...-fc.20000010a1234:5006016844e0a6a7
State: active (optimized)
SATP: VMW_SATP_DEFAULT_AA
PSP: VMW_PSP_MRU
fc.20000010a1234:5006016844e0a6a7-naa.600601607...-fc.20000010a1234:5006016844e0a6a8
State: active (non-optimized)
SATP: VMW_SATP_DEFAULT_AA
PSP: VMW_PSP_MRU
fc.20000010a1234:5006016844e0a6a8-naa.600601607...-fc.20000010a1234:5006016844e0a6a9
State: active (non-optimized)
SATP: VMW_SATP_DEFAULT_AA
PSP: VMW_PSP_MRU
fc.20000010a1234:5006016844e0a6a9-naa.600601607...-fc.20000010a1234:5006016844e0a6a6
State: active (non-optimized)
SATP: VMW_SATP_DEFAULT_AA
PSP: VMW_PSP_MRU
An administrator notices that a VMFS datastore has only one optimized path. The exhibit shows the output of esxcli storage nmp path list for that datastore. What should the administrator do to fully utilize both storage controllers?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Change the SATP to VMW_SATP_ALUA.
The SATP should be VMW_SATP_ALUA for arrays that support ALUA to properly handle optimized and non-optimized paths. The current SATP (DEFAULT_AA) treats all paths equally, leading to suboptimal path usage.
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.
✗
Rescan the storage adapters.
Why it's wrong here
Rescanning will not change the assigned SATP or improve path state recognition.
✗
Change the PSP to Round Robin.
Why it's wrong here
Changing PSP does not address the underlying path state classification; the SATP is responsible for path state management.
✗
Enable the path failover policy.
Why it's wrong here
Path failover does not change the SATP and will not utilize non-optimized paths effectively.
✓
Change the SATP to VMW_SATP_ALUA.
Why this is correct
VMW_SATP_ALUA correctly recognizes optimized and non-optimized paths, allowing the PSP to use both paths for I/O.
Related concept
Static NAT maps one inside address to one outside address.
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.
Configure and Manage vSphere Storage — This question tests Configure and Manage vSphere Storage — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Change the SATP to VMW_SATP_ALUA. — The SATP should be VMW_SATP_ALUA for arrays that support ALUA to properly handle optimized and non-optimized paths. The current SATP (DEFAULT_AA) treats all paths equally, leading to suboptimal path usage.
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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