Download Advanced VMware Cloud Foundation 9.0 Storage.3V0-23.25.Actual4Test.2026-11-10.85q.vcex

Vendor: VMware
Exam Code: 3V0-23.25
Exam Name: Advanced VMware Cloud Foundation 9.0 Storage
Date: Nov 10, 2026
File Size: 374 KB

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Question 1
A VCF Architect is designing the security footprint for a multi-petabyte vSAN Stretched Cluster.
The architecture spans two active data centers (Site A and Site B) connected via a leased WAN circuit, and a 3rd Site for the Witness Appliance.
[Image showing Data-in-Transit Encryption flows across the Inter-Site
Link (ISL) and to the Witness Host]
Which of the following statements correctly evaluate the role and scope of Data-in-Transit (DiT) encryption in this Stretched Cluster topology? (Select all that apply.)
  1. The Witness Appliance must be licensed with a dedicated external KMS to generate the decryption keys for the DiT metadata stream.
  2. DiT is highly critical in Stretched Clusters because the synchronous writes between Site A and Site B traverse a public/leased Inter-Site Link (ISL) where physical cable security cannot be guaranteed.
  3. DiT in a stretched cluster requires enabling the "Witness Traffic Separation" (WTS) feature to isolate the encryption streams.
  4. DiT eliminates the requirement for vSAN Data-at-Rest (D@RE) Encryption because data written across the WAN is already secured during transit.
  5. DiT encrypts the low-bandwidth CMMDS tie-breaker traffic sent to the Witness Appliance, preventing man-in-the-middle attacks from manipulating cluster quorum.
Correct answer: B, E
Question 2
A customer attaches an external Fibre Channel (FC) VMFS datastore to a VMware Cloud Foundation (VCF) workload domain for backup staging. The administrator must confirm that the datastore is visible to all hosts, and that path and device health alarms will trigger should a fabric link or path fail.
Which action should the administrator take to verify this?
  1. Run esxcli vsan storage list on each host to view VMFS datastore path status.
  2. In vCenter verify the external VMFS datastore connectivity, paths and multipath health.
  3. Execute storage.monitor.getStatus via VCF SDK to receive a consolidated health summary of all VMFS, vSAN and NFS datastores.
  4. Use esxcli fc adapter list followed by vmkfstools --inspectpaths to validate health for the VMFS LUN.
Correct answer: B
Explanation:
The correct action is to verify the datastore, device paths, and multipathing state in vCenter. Fibre Channel VMFS storage depends on SAN fabric connectivity, HBAs, zoning, LUN masking, storage processors, path selection policies, and multipathing. vCenter provides the operational view needed to confirm whether the FC VMFS datastore is visible to every ESX host in the workload domain cluster. It also exposes storage device path status and multipath health so administrators can validate that redundant paths are active and alarms can trigger when a fabric link or path fails. esxcli vsan storage list is specific to vSAN devices and does not validate external FC VMFS paths. The proposed VCF SDK command is not the standard method for validating FC path and datastore visibility. vmkfstools -- inspectpaths is not the normal vSphere workflow for FC LUN health validation. For FC-backed VMFS, vCenter storage views provide the correct centralized validation point. Reference topics: Fibre Channel Storage Model, VMFS Datastore Connectivity, Multipathing, Path Health, vCenter Storage Monitoring.
Question 3
A Storage Administrator is performing post-migration health checks after upgrading a Workload Domain from vSAN OSA to vSAN ESA. The legacy OSA cluster heavily relied on Deduplication to meet capacity requirements.
The administrator pulls the vmkernel.log and observes the compression statistics for the ESA storage pool.
```
2026-11-20T10:15:22Z INFO vsan-lsom - Object 5543... enabling
compression.
2026-11-20T10:15:35Z INFO vsan-dom - Write I/O (4KB) compressed to 1KB.
Network transmit: 1KB.
2026-11-20T10:15:45Z INFO vsan-crypto - Encrypting 1KB payload.
2026-11-20T10:16:00Z INFO vsan-lsom - Storage Pool capacity update:
Total logical written 100TB, Physical consumed 40TB.
```
The administrator is concerned that the loss of "Deduplication" in ESA will cause the cluster to run out of physical space.
How does the log data and the deep architectural fusion of ESA features resolve the administrator's concern? (Select all that apply.)
  1. The log proves that 100TB of logical data is only consuming 40TB of physical space (a 2.5x efficiency ratio) using ONLY compression, effectively replacing the legacy deduplication savings.
  2. By eliminating the deduplication hash table lookups, ESA eliminates the primary cause of high backend latency, allowing the storage pool to sustain higher IOPS even as capacity fills up.
  3. The log confirms the "Top-of-Stack" processing pipeline: Data is Compressed FIRST (4KB to
    1KB), then Transmitted, then Encrypted. This ensures the network and encryption engines only process the minimized payload.
  4. Because Deduplication is missing, the backend resync time during a host failure will increase significantly compared to OSA, as ESA must rebuild duplicate blocks.
Correct answer: A, B, C
Question 4
A VCF Architect is using the SDDC Manager API to deploy a massive "Shared Witness" topology.
The goal is to support 40 independent 2-Node vSAN ROBO clusters using a single, large Witness Appliance located in the Management Domain.
```
# SDDC Manager API Specification
{
"witnessSpec": {
"hostname": "Shared-Witness-01",
"size": "Extra-Large",
"max_components": 60000
},
"targetClusters": [ "ROBO-01", "ROBO-02", ... "ROBO-40" ] }
```
Which of the following statements accurately describe the architectural constraints and capabilities of the VCF Shared Witness feature? (Select all that apply.)
  1. If the single Shared Witness appliance crashes, all 40 ROBO clusters will immediately suffer a datastore lockout and the edge VMs will become Inaccessible.
  2. A single "Extra-Large" Shared Witness appliance can support up to 64 distinct 2-Node clusters, consolidating up to 64,000 metadata components into one VM.
  3. Shared Witness is strictly supported for standard 2-Node ROBO configurations; it cannot be used to consolidate witnesses for full 3+3 node Stretched Clusters.
  4. Shared Witness requires SDDC Manager to deploy the appliance directly onto AWS EC2 instances, as on-premises VCF datastores cannot support the combined IOPS load.
  5. All 40 ROBO clusters mapped to the Shared Witness must be running the exact same vSAN Architecture (either all OSA or all ESA) and identical ESXi versions to maintain CMMDS compatibility.
Correct answer: B, C, E
Question 5
A SOC Analyst is investigating a failure in a Tanzu environment where newly deployed stateful Pods are remaining in a Pending state. The pods are failing to bind to their Persistent Volume Claims (PVCs). The analyst reviews the vmkernel.log on the ESXi host running the Kubernetes Supervisor Control Plane:
```
2026-11-25T14:10:05Z INFO vsphere-csi - Received CreateVolume request:
size=50GB, policy="High- Perf-vSAN"
2026-11-25T14:10:06Z WARN vsan-dom - Storage Policy "High-Perf-vSAN"
violates cluster capabilities. FTT=2 requires 6 fault domains.
Available: 4.
2026-11-25T14:10:06Z ERROR vsphere-csi - CNS CreateVolume failed.
Reason: Datastore lacks sufficient capacity or domains to satisfy SPBM
profile.
2026-11-25T14:10:06Z ERROR k8s-controller - PVC 'mysql-data-pvc' failed to provision. Retrying...
```
Based on the log analysis, which TWO statements describe the root cause and the required remediation? (Choose 2.)
  1. The analyst must expand the physical vSAN cluster to a minimum of 6 hosts, or modify the SPBM policy to FTT=1, to allow CNS to provision the volume.
  2. The Kubernetes ClusterRoleBinding lacks the necessary IAM permissions to execute vCenter API calls.
  3. The requested StorageClass references an SPBM policy (FTT=2/RAID-6) that is mathematically impossible to fulfill on the current 4-node vSAN cluster.
  4. The ESXi host's vsphere-csi daemon has crashed and must be restarted via the vCenter VAMI interface.
  5. The PVC request of 50GB exceeds the hardcoded limit for First Class Disks (FCD) in vSAN ESA.
Correct answer: A, C
Question 6
A VCF Architect is using SDDC Manager to create a VI Workload Domain that will immediately be configured as a vSAN Stretched Cluster.
To achieve this, the architect must coordinate the baseline Workload Domain creation with the specific Stretched Cluster network prerequisites. The architect reviews the prepared configuration:
```
[Network Configuration - WLD-03]
vSAN Network Segment (Site A): 192.168.10.0/24 (MTU 9000)
vSAN Network Segment (Site B): 192.168.20.0/24 (MTU 9000)
Witness Network Segment: 192.168.100.0/24 (MTU 1500)
Static Routes: Site A/B vSAN networks <-> Witness network
License: vSAN Enterprise Applied
```
Which of the following actions and configurations are REQUIRED to successfully integrate the SDDC Manager workflow with the Stretched Cluster deployment? (Select all that apply.)
  1. The VI Workload Domain must first be deployed as a standard single-site cluster in SDDC Manager before it can be converted into a Stretched Cluster via day-2 operations.
  2. The Witness Appliance must be imported and registered into SDDC Manager inventory prior to running the Workload Domain creation wizard.
  3. The vSAN Network Segment (Site B) must be placed on a separate Layer 2 VLAN from Site A, meaning static routes must be configured on the hosts for cross-site vSAN communication.
  4. The vSAN License assigned during the Workload Domain creation must be 'vSAN Enterprise' or higher to support the Stretched Cluster topology.
Correct answer: A, C, D
Question 7
An administrator is deploying a vSphere Supervisor Cluster on a VMware Cloud Foundation (VCF) Workload Domain that uses NFS storage. As part of the configuration, the administrator must define separate storage policies for container images, ephemeral volumes, and persistent volumes within the vSphere Namespace.
The solution must align with vSphere Storage Policy Based Management (SPBM) and Broadcom TechDocs recommendations for supported Supervisor configurations.
Which configuration meets these requirements?
  1. Create three SPBM storage policies that all reference the same shared NFS datastore. Assign these policies respectively to container images, ephemeral volumes, and persistent volumes when enabling Workload Management to logically isolate the volume types within a single datastore.
  2. Use datastore clusters to automatically balance storage consumption for container and persistent volumes, and rely on vSphere DRS to place ephemeral data dynamically across datastores.
  3. Create three distinct SPBM storage policies mapped to shared NFS datastore(s). Assign the policies to the corresponding storage options for container images, ephemeral volumes, and persistent volumes.
  4. Define one default storage policy and allow the Supervisor control plane to automatically create sub- policies for container and persistent workloads during namespace provisioning.
Correct answer: C
Explanation:
The correct configuration is to create distinct SPBM storage policies mapped to supported shared NFS datastore resources and assign them to the matching Supervisor storage functions. Supervisor uses storage policies to represent datastores and to manage placement of components and workload storage.The documentation states that storage policies support shared datastores such as VMFS, NFS, vSAN, and vSAN ESA. At the Supervisor level, administrators configure storage policies for control plane VMs and, when vSphere Pods are used, assign policies for ephemeral disks and container image disks.Persistent storage for workloads is also made available through storage policies assigned at namespace level. Option A is too narrow because it forces all policies to reference one datastore merely for logical isolation, while the supported model allows distinct policies mapped to one or more shared NFS datastores. Option B is incorrect because DRS is compute placement, and datastore clusters are not the Supervisor mechanism for persistent volume policy assignment. Option D is incorrect because the Supervisor does not automatically create these storage policies. Reference topics: Supervisor Storage Policies, SPBM, NFS Shared Datastores, Ephemeral Disks, Container Images, Persistent Volumes.
Question 8
An L3 Support Engineer is called into a war room. A vSAN ESA Stretched Cluster (Site A and Site B, with Witness at Site C) has suffered a complex cascade failure.
Current State:
1. Site B suffered a total power loss.
2. Simultaneously, the Witness Appliance network link at Site C was severed.
3. Site A remains fully operational with no hardware faults.
The VMs originally running on Site B are unreachable. The VMs originally running on Site A are frozen.
The Storage Policy configuration is shown below:
```
# Stretched Cluster Policy
[Site-Disaster-Tolerance]
Rule = "Dual site mirroring (stretched cluster)"
[Failures-to-Tolerate]
Rule = "1 failure - RAID-5 (Erasure Coding) [Local]"
[Advanced-Rule]
ForceProvisioning = 0
```
Based on the integration of Object Health states and Stretched Cluster topology, why are the VMs on Site A frozen, and what is the exact status of their storage objects? (Select all that apply.)
  1. The objects for Site A VMs are "Inaccessible" because Site A holds only the local replica (1 vote), while the Site B replica (1 vote) and the Witness (1 vote) are both unavailable, resulting in a loss of cluster quorum (<50%).
  2. The local RAID-5 policy rule on Site A cannot override the primary Stretched Cluster quorum; both site-level components and local components must be evaluated.
  3. The ForceProvisioning = 0 rule prevents vSphere HA from restarting the VMs on Site A until Site B is recovered.
  4. Restoring network connectivity to the Witness at Site C is the fastest operational path to restore object accessibility for the VMs on Site A.
  5. The objects are in "Reduced Availability" (ABSENT state) because the Dual Site Mirroring policy allows Site A to maintain independent quorum using its local RAID-5 parity blocks.
Correct answer: A, B, D
Question 9
A storage architect is designing a vSAN solution that enforces quotas and Access Based Enumeration (ABE) on all file shares.
What should the architect highlight as a design decision implication?
  1. When creating the share, enable quotas and ABE under SMB settings.
  2. Quotas are supported only on NFS shares; ABE is supported only on SMB shares.
  3. Deploy separate file services servers, one for quotas and one for ABEs.
  4. Quotas and ABEs must be configured at a cluster level and not per-share.
Correct answer: A
Explanation:
The architect should highlight that quotas and Access Based Enumeration are configured when creating the vSAN file share, with ABE available for SMB shares. In the vSAN File Service create-share workflow, the General page allows the administrator to choose the protocol and configure protocol-specific options. When SMB is selected, the share can be configured with Access Based Enumeration, which displays only files and folders that the user has permission to access and hides files or folders where the user lacks Read or equivalent permissions. The same create-share workflow also includes Storage space quotas, including a share warning threshold and a share hard quota. Therefore, the design implication is operational: quotas and ABE must be planned and applied at the file-share configuration level for SMB shares that require both controls.Quotas are not limited only to NFS shares, and ABE is not a cluster-level setting. Separate file service servers are also unnecessary because vSAN File Service supports SMB and NFS shares through the same file service architecture. Reference topics: vSAN File Service, Create vSAN File Share, SMB Access Based Enumeration, Storage Space Quotas.
Question 10
An administrator has been tasked with suggesting storage models for a new VMware Cloud Foundation (VCF) Private Cloud. The following information has been provided:
* All existing implementations of VMware vSphere use the existing third-party block-based storage solution.
* The block-based storage solution only has sufficient scale, capacity and IOPS to cater for the new workload storage requirements.
* There is a dedicated and highly resilient storage area network connecting hosts to the provided block-based storage.
* There are 5 existing hosts with enough CPU and RAM resources and resilient Host Bus Adapters (HBAs) to cater for the new workload resource requirements only.
* There is sufficient budget to purchase some hardware, however the solution must re-use the existing hardware where possible.
The administrator suggests the following high-level solution:
* Single VCF Instance with a single Workload Domain.
* Deploy 4 new servers to create a Management Domain.
* Repurpose the 5 existing servers to create a single cluster in the Workload Domain.
Which two storage models should the administrator recommend? (Choose two.)
  1. iSCSI should be the supplemental storage solution for the VCF Workload Domain.
  2. iSCSI should be the principal storage solution for the VCF Management Domain.
  3. Fibre Channel should be the principal storage solution for the VCF Workload Domain.
  4. VMware vSAN should be the principal storage solution for the VCF Management Domain.
  5. VMware vSAN should be the principal storage solution for the VCF Workload Domain.
Correct answer: C, D
Explanation:
The workload domain should use Fibre Channel as principal storage because the existing five hosts already have resilient HBAs and are connected to a dedicated, highly resilient storage area network.The third-party block storage is also stated to have sufficient scale, capacity, and IOPS for the new workload requirements only, so it should be reused where it directly fits: the VI workload domain.VMware Cloud Foundation supports Fibre Channel as both principal and supplemental storage for VI workload domains. The management domain should use VMware vSAN as principal storage because the four new servers are being purchased for the management domain, and the existing block storage is not sized for management workloads. vSAN is a native VCF principal storage model for management domains and provides automated deployment, policy-based management, lifecycle integration, and integrated operations. iSCSI is not the right answer because the scenario describes Fibre Channel SAN connectivity and HBAs, not an iSCSI design. vSAN for the workload domain would also fail the reuse requirement because it would ignore the existing block storage investment. Reference topics: Principal Storage, Fibre Channel Storage Model, vSAN Storage Model, Management Domain Storage.
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