3V0-23.25試験の準備方法｜正確的な3V0-23.25日本語版復習資料試験｜便利なAdvanced VMware Cloud Foundation 9.0 Storage復習対策書

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VMware 3V0-23.25 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Advanced Storage Solutions	10%	- Storage for Kubernetes workloads - Multi-cloud storage management - External storage integration
Topic 2: Storage Lifecycle Management	15%	- Compliance and health checks 1. Configuration drift detection 2. Hardware compatibility and validation - Lifecycle management with SDDC Manager 1. Firmware and driver management 2. Update and upgrade workflows
Topic 3: Performance Optimization and Monitoring	20%	- Performance tuning 1. I/O limit and QoS configuration 2. Resiliency and performance balance 3. Cache and capacity tier optimization - Monitoring and troubleshooting 1. Log analysis and error identification 2. Aria Operations integration 3. vSAN performance views and metrics
Topic 4: Disaster Recovery and Business Continuity	10%	- vSphere Replication configuration - Failover and failback operations - Site Recovery Manager integration
Topic 5: vSAN Deployment and Configuration	25%	- Advanced configuration 1. File services and iSCSI services 2. Encryption and security settings 3. Stretched cluster and fault domains - Cluster deployment and expansion 1. Node addition and replacement 2. Disk group configuration and optimization
Topic 6: VMware Cloud Foundation Storage Architecture and Design	20%	- Storage Policy Based Management (SPBM) 1. Policy design and compliance 2. Policy mapping and inheritance - vSAN Architecture in VCF Environment 1. Storage domains and workload domain integration 2. vSAN OSA and ESA differences and use cases 3. I/O path and data flow design

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VMware Advanced VMware Cloud Foundation 9.0 Storage 認定 3V0-23.25 試験問題 (Q18-Q23):

質問 # 18
A cache drive failed on one of the vSAN OSA nodes in the cluster.
When the drive failed, vSAN started a resync to ensure the health of the data, and all objects are showing a healthy and compliant state.
The vSAN administrator needs to replace the failed cache drive.
Which set of steps should the vSAN administrator take?

A. Remove the existing vSAN disk group, and physically replace the device. Then, check to verify that the ESX host automatically detects the new device. Afterwards, manually recreate the Disk Group.
B. Physically replace the failed cache device, and vSAN will automatically allocate the storage.
C. Place the disk group into maintenance mode, and select Full Data Migration. Then, physically replace the failed cache device. Afterwards, vSAN will rebuild the disk group automatically.
D. Physically replace the failed cache device, and vSAN will automatically create a new disk group. Then, remove the disk group with the failed device.

正解：A

解説：
In vSAN Original Storage Architecture, a disk group consists of one flash cache device and one or more capacity devices. The cache device is a required component of the disk group, so a failed cache device cannot be replaced as an isolated drive while preserving the same disk group. The supported operational approach is to remove the affected disk group, physically replace the failed cache device, verify that ESX detects the new device, and then manually recreate the disk group using the replacement cache device and the appropriate capacity devices. The scenario states that vSAN has already completed resynchronization and that all objects are healthy and compliant, so removing the failed disk group no longer risks object noncompliance. Selecting Full Data Migration on a failed cache device is not the correct workflow because the cache failure affects the entire disk group. Simply inserting a replacement drive does not cause vSAN OSA to automatically rebuild the disk group.
Reference topics: vSAN OSA Disk Groups, Replace a Cache Device, Remove Disk Group, Recreate Disk Group.

質問 # 19
An Operations Engineer is troubleshooting a vSAN ESA cluster. Following a reboot of Host-03, a
50 TB virtual machine object has entered the "Inaccessible" state.
The DOM and LSOM components exist, but the metadata appears desynchronized. The engineer uses the Ruby vSphere Console (RVC) to query the object hierarchy.
```
[RVC Output: vsan.object_info ~cluster 554350...]
DOM Object: 554350... (State: Inaccessible)
- Component 1: UUID abc... (Host: Host-01, DOM Owner: Active)
- Component 2: UUID def... (Host: Host-02, DOM Owner: Active)
- Component 3: UUID ghi... (Host: Host-03, LSOM State: STALE)
```
How does the architectural handshake between DOM and LSOM function in ESA to validate data integrity when a host reboots, and why is this object inaccessible? (Select all that apply.)

A. Recovery requires the DOM to perform a delta-resync, pushing only the changed blocks from the Active components to the LSOM of the STALE component on Host-03.
B. The LSOM on Host-03 must explicitly communicate with the ESXi hypervisor kernel to re-format the NVMe drive before the DOM can re-index the component.
C. The DOM Client on the compute host will automatically execute an LSOM bypass to read directly from the physical NVMe drives on Host-01 and Host-02.
D. The DOM Owner tracks the Object Configuration Sequence Number (CSN). Host-03 rebooted and missed DOM update generations, so its local LSOM component carries an outdated (STALE) CSN.
E. Because Host-03 has a STALE component, the DOM denies its voting rights. The object has lost quorum (only 2 of 3 votes are valid), triggering the "Inaccessible" state to prevent reading old data.

正解：A、D、E

質問 # 20
A Compliance Auditor is tracking the success of an automated "Shallow Rekey" task scheduled across a massive VCF 9.0 multi-cluster environment. The task failed on a specific vSAN Stretched Cluster.
```
[Skyline Health > vSAN > Encryption Health]
Status: Warning
Message: "KMS Server unreachable on Host esx-04. Rekey Aborted."
[Architecture Details]
esx-04 is part of the Secondary Site. The Inter-Site Link is currently DOWN (Partition).
```
How does the vSAN encryption architecture prevent data loss and split-brain when a Rekey operation hits a partitioned cluster? (Choose 2.)

A. The Shallow Rekey operation is strictly an atomic transaction; if esx-04 cannot reach the KMS to receive the new Key Encryption Key (KEK), the vCenter master node rolls back the KEK on all other hosts to ensure cluster-wide key consistency.
B. Even though the Rekey failed, the virtual machines on the surviving site remain fully operational because the ESXi hosts maintain the *current* KEK cached in their secure RAM, requiring no active KMS connection to serve I/O.
C. esx-04 will automatically fallback to the local Witness appliance to generate a temporary KEK until the network is restored.
D. The DOM Client forces esx-04 to perform a Deep Rekey using the vSphere TPM chip to bypass the KMS outage.
E. esx-04 will instantly cryptographically shred its local drives to prevent data compromise during the network partition.

正解：A、B

質問 # 21
A Compliance Auditor is validating that a proposed vSAN ReadyNode hardware cluster meets the exact requirements needed to support a highly aggressive Storage Policy requested by the development team.
The policy requires extreme read performance for a distributed file system.
```
# SPBM Policy: "Extreme-Read-Parallelism"
FailuresToTolerate: 1 (RAID-1)
StripeWidth: 10
ObjectSpaceReservation: 100%
```
The auditor examines the vSAN Sizer output. The Sizer rejects the existing 4-Node, 6-drive-per- host cluster configuration.
How does the interaction between the StripeWidth: 10 rule and the vSAN object placement algorithm dictate the required hardware ReadyNode scaling in the Sizer? (Select all that apply.)

A. Stripe Width is a logical construct that ignores physical drive count; the Sizer rejection is purely based on the FTT=1 memory overhead limit.
B. If the Sizer keeps the cluster at 4 nodes, it must recommend ReadyNodes equipped with a significantly higher density of NVMe drives per host (e.g., 12-24 drives per host) to satisfy the high local stripe width capacity.
C. The "ObjectSpaceReservation: 100%" component requires the Sizer to recommend drives with
100% dedicated cache capacity, which violates ESA standards.
D. The "Stripe Width = 10" rule forces the DOM to distribute a single replica of the VMDK across 10 distinct physical NVMe drives. If a single host only has 6 drives, the Sizer must expand the object across multiple hosts to find 10 drives.
E. The Sizer may recommend adding more hosts to the cluster (Scale-Out) to increase the aggregate number of physical NVMe spindles available to absorb the 10-wide stripe distribution.

正解：B、D、E

質問 # 22
A Cloud Administrator is integrating a third-party Backup solution with a vVols-backed VCF cluster.
The goal is to perform crash-consistent backups with minimal stun time for the production VMs.
The storage team created an advanced array-side feature definition that is pushed to vCenter via the VASA Provider.
```
# SPBM Policy: "vVol-Backup-Optimized"
capabilities:
vvol:
array.snapshots: true
array.fast_clone: true
ruleSet:
IOPS_Limit: 50000
```
How do vVols, VASA, and SPBM integrate to fulfill this backup requirement during the daily backup window? (Select all that apply.)

A. The array.fast_clone capability allows the backup software to export the vVol data directly over the management network without mounting it to an ESXi host.
B. When the backup software triggers a snapshot, vCenter uses VASA to instruct the physical array to create a hardware snapshot of the specific vVol, bypassing the ESXi storage stack entirely.
C. Because vVols represent individual VMDKs on the array, the array can snapshot just the single VM's data, unlike VMFS where array snapshots must capture the entire 10 TB LUN containing dozens of VMs.
D. The integration practically eliminates the "VM stun" period that occurs during snapshot consolidation in traditional VMFS datastores.

正解：B、C、D

質問 # 23
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