5V0-22.23練習テスト問題は更新された75問題あります
VMware 5V0-22.23問題集で一発合格できる問題を試そう！
VMware 5V0-22.23認定を獲得するには、VSANアーキテクチャ、展開、構成、管理、およびトラブルシューティングに関連するさまざまなトピックをカバーする60回の質問試験に合格する必要があります。この試験は、候補者が組織のニーズを満たすVSANソリューションを設計、展開、管理する能力をテストし、VSAN環境で発生する可能性のある一般的な問題のトラブルシューティングをテストするように設計されています。成功した候補者は、効果的なVSANスペシャリストになるために必要なスキルと知識の習熟を実証し、仮想化とクラウドコンピューティングの分野でのキャリアを促進するために適切に位置付けられます。
VMWare VSANスペシャリスト（V2）試験は、VMWare VSANテクノロジーにおける個人の知識とスキルを評価するために設計された認定プログラムです。この認定は、仮想化された環境でVSANソリューションの設計、実装、および管理を担当するIT専門家を対象としています。 VMware VSANスペシャリスト（V2）試験は、現在退職している以前のVMware VSANスペシャリスト試験の更新バージョンです。
VMware 5V0-22.23試験は、60の択一問題から成り、受験者は105分以内に完了する必要があります。この試験は、vSANアーキテクチャ、構成、仮想マシンの管理、ストレージポリシー、パフォーマンスモニタリングなど、さまざまなトピックをカバーしています。合格者はVMware vSANスペシャリスト認定を受け、この分野における専門知識を証明し、仮想化とクラウドコンピューティングの分野でのキャリアアップに役立てることができます。
質問 # 15
An administrator must choose between deploying a virtual witness or a physical witness for a vSAN Stretched Cluster. The administrator eventually decides to use a virtual witness.
What is a benefit of selecting this approach?
- A. Shared metadata between separate clusters
- B. Reduced vSphere licensing
- C. Increased vSAN datastore capacity
- D. Additional compute capacity for running VMs
正解：B
解説：
Explanation
The correct answer is C, reduced vSphere licensing. This is because using a virtual witness appliance instead of a physical witness host can save on vSphere licensing costs, as the virtual witness appliance does not consume a vSphere license. The virtual witness appliance is a preconfigured virtual machine that runs ESXi and is distributed as an OVA file. It can be deployed on any ESXi host that has network connectivity to both data sites of the stretched cluster. The virtual witness appliance does not run any virtual machines other than itself and only hosts witness components of virtual machine objects. The other options are incorrect for the following reasons:
A, increased vSAN datastore capacity, is incorrect because using a virtual witness appliance does not affect the vSAN datastore capacity. The witness appliance does not store any customer data, only metadata, such as the size and UUID of vSAN object and components. The witness appliance also does not contribute any storage devices to the vSAN datastore.
B, shared metadata between separate clusters, is incorrect because using a virtual witness appliance does not enable sharing metadata between separate clusters. The witness appliance is dedicated to one stretched cluster and cannot serve as a witness for multiple clusters. The witness appliance maintains consistency between the two data sites of the stretched cluster by hosting witness components that act as tie-breakers in case of a site failure or network partition.
D, additional compute capacity for running VMs, is incorrect because using a virtual witness appliance does not provide additional compute capacity for running VMs. The witness appliance does not run any VMs other than itself and does not participate in any compute operations of the stretched cluster. The witness appliance only hosts witness components that consume minimal CPU and memory resources.
References:
VMware vSAN Specialist v2 Exam Preparation Guide, page 11
Deploying a vSAN Witness Appliance
質問 # 16
A vSAN administrator is investigating vSAN performance related problems but cannot find any vSAN performance statistics on the cluster summary page.
Why is this situation occurring?
- A. The vRealize Operations Manager is not integrated with vSAN cluster.
- B. The administrator has read-only permissions on the cluster level.
- C. vSAN performance statistics are only available via CLI.
- D. vSAN performance service is not enabled.
正解：D
解説：
Explanation
The reason why the vSAN administrator cannot find any vSAN performance statistics on the cluster summary page is that the vSAN performance service is not enabled. The vSAN performance service is a feature that collects and analyzes performance metrics and displays them in graphical charts in vCenter. The vSAN performance service must be turned on manually for each vSAN cluster, as it is not enabled by default. The other options are not correct. The integration of vRealize Operations Manager with the vSAN cluster is not required to view vSAN performance statistics, as they are available in vCenter. The administrator's permissions on the cluster level do not affect the visibility of vSAN performance statistics, as they are accessible to any user who can view the cluster. vSAN performance statistics are not only available via CLI, as they can also be viewed in vCenter using the vSAN performance service. References: About the vSAN Performance Service; Enable or Disable the Performance Service
質問 # 17
All of the virtual machines running on a hybrid vSAN datastore have this storage policy assigned:
Failures to Tolerate (FTT) rule is set to "2 Failures - RAID-1 (Mirroring)" The vSAN administrator needs to reduce the amount of vSAN datastore capacity the virtual machines will consume.
Which action should the vSAN administrator take to meet this goal?
- A. Add the "Flash read cache reservation" rule to the storage policy, and set to 0%
- B. Change the FTT rule to "1 Failure - RAID-1 (Mirroring)", and select "Now" for Reapply to VMs
- C. Disable Operations reserve and Host rebuild reserve and click "Apply"
- D. Modify the FTT rule to "2 Failures - RAID-5 (Erasure Coding)"
正解：B
解説：
Explanation
To reduce the amount of vSAN datastore capacity the virtual machines will consume, the vSAN administrator should change the FTT rule to "1 Failure - RAID-1 (Mirroring)", and select "Now" for Reapply to VMs. This action will reduce the number of replicas for each object from three to two, and thus free up some space on the vSAN datastore. The other options are not correct, as they will not reduce the capacity consumption.
Modifying the FTT rule to "2 Failures - RAID-5 (Erasure Coding)" will not work for a hybrid vSAN cluster, as erasure coding is only supported for all-flash clusters. Adding the "Flash read cache reservation" rule to the storage policy, and setting to 0% will not affect the capacity layer, as it only controls the amount of flash cache reserved for each object. Disabling Operations reserve and Host rebuild reserve and clicking "Apply" will not change the actual space used by the objects, as these reserves are only logicalsettings that affect how much free space is reported by vSAN. References: 1, page 9; , section 4.3
質問 # 18
An application refactor requires significant storage that is being added for logs stored on a VM vDISK. The application VMs run on a dedicated vSAN enabled vSphere Cluster with custom CPUs and RAM, and therefore, cannot vMotion to another vSAN enabled cluster.
The administrator needs a vSAN feature that can be used to allocate additional storage from another vSAN enabled vSphere cluster to this vSAN enabled Cluster.
Which vSAN feature should be used for this purpose?
- A. vSAN HCI Mesh
- B. vSAN File Services
- C. vSAN Replication
- D. vSAN Stretched Clusters
正解：A
解説：
Explanation
To allocate additional storage from another vSAN enabled vSphere cluster to this vSAN enabled Cluster, the administrator should use the vSAN HCI Mesh feature. This feature allows a vSAN cluster to consume storage resources from another vSAN cluster without requiring the hosts to be part of the same cluster. This way, the administrator can leverage the unused or underutilized storage capacity from another cluster and avoid purchasing new hardware or migrating VMs. The vSAN HCI Mesh feature also supports storage policies, encryption, deduplication and compression, and erasure coding across clusters12 References: 1: VMware vSAN Specialist v2 Exam Preparation Guide, page 15 2: VMware vSAN 7 Update 1 - HCI Mesh 3
質問 # 19
An administrator is tasked to create a Kerberos secured NFS v4.1 file share.
Which information is minimally required during the configuration of the File Service?
- A. Organizational Unit, User Account, Password
- B. Active Directory Domain. Organizational Unit, User Account. Password
- C. Kerberos Server, User Account, Password
- D. Active Directory Domain, User Account, Password
正解：D
解説：
Explanation
To create a Kerberos secured NFS v4.1 file share, the administrator needs to provide the following information during the configuration of the File Service:
Active Directory Domain: The domain name of the Active Directory server that provides Kerberos authentication service for the NFS server and clients. For example, example.com.
User Account: The user name of the Active Directory account that has permissions to join the NFS server to the domain and create service principal names (SPNs) for the NFS server. For example, [email protected].
Password: The password of the Active Directory account that is used for authentication. For example, P@ssw0rd.
These information are required to enable Kerberos security for NFS 4.1 and allow the NFS server to obtain a Kerberos ticket from the Active Directory server. The administrator also needs to specify the NFS share name, path, and access permissions1 References: 1: VMware vSphere Storage Guide, page 118
質問 # 20
Which two considerations should an architect assess when designing a HCI Mesh solution with VMware vSAN and VMware vSphere High Availability (HA)? (Choose two.)
- A. If vSphere HA is to work with HCI Mesh, Datastore with Permanent Device Loss (PDL) must be confiqured to Power off and restart VMs.
- B. A minimum of three nodes are required within the client cluster for vSphere HA to work
- C. A server vSAN cluster can serve its local datastore up to five client vSAN clusters.
- D. A client cluster can mount up to ten remote datastores from one or more vSAN server clusters.
- E. If vSphere HA is to work with HCI Mesh, Datastore with AllPaths Down (APD) must be configured to Power off and restart VMs.
正解：B、E
解説：
Explanation
To design a HCI Mesh solution with VMware vSAN and VMware vSphere High Availability (HA), two considerations that the architect should assess are: A minimum of three nodes are required within the client cluster for vSphere HA to work. This is because vSphere HA needs at least three nodes in a cluster to form a quorum and elect a master host that monitors the availability of other hosts and VMs. If there are less than three nodes in a cluster, vSphere HA cannot function properly and might fail to detect or respond to host or VM failures. If vSphere HA is to work with HCI Mesh, Datastore with All Paths Down (APD) must be configured to Power off and restart VMs. This is because APD is a condition that occurs when a storage device becomes inaccessible due to loss of physical connectivity, resulting in I/O errors or timeouts for VMs that use that device. When using HCI Mesh, APD can happen if the network connection between the client cluster and the server cluster is lost or disrupted, causing the remote datastore to become unavailable. To ensure that vSphere HA can restart the affected VMs on another host that has access to their storage, Datastore with APD must be set to Power off and restart VMs in the vSphere HA settings. The other options are not correct. A server vSAN cluster can serve its local datastore up to 15 client vSAN clusters, not five. This is the maximum number of client clusters that can mount a remote datastore from a server cluster using HCI Mesh.
A client cluster can mount up to five remote datastores from one or more vSAN server clusters, not ten. This is the maximum number of remote datastores that can be mounted by a client cluster using HCI Mesh.
References: VMware vSAN HCI Mesh; vSphere Availability; Handling All Paths Down (APD) Conditions
質問 # 21
What is the minimum required number of hosts to provide data redundancy for a vSAN stretched cluster using dual-site mirroring and local protection with 1 failure - RAID-1 (Mirroring)?
- A. 3 hosts
- B. 6 hosts
- C. 4 hosts
- D. 3 hosts
正解：B
解説：
Explanation
The minimum required number of hosts to provide data redundancy for a vSAN stretched cluster using dual-site mirroring and local protection with 1 failure - RAID-1 (Mirroring) is six hosts. This is because a vSAN stretched cluster requires at least three hosts per site, and each site must have enough hosts to tolerate one host failure. Therefore, the minimum configuration is three hosts per site, plus one witness host at a third site, for a total of six hosts. References: [VMware vSAN Specialist v2 EXAM 5V0-22.23], page 14
質問 # 22
When adding a disk to a host that was previously used in a decommissioned vSAN cluster the intended disk does not show among the available devices in disk management.
Which action should be taken prior to assigning the disk on disk management?
- A. Format the existing partition
- B. Create a 1GB metadata partition
- C. Delete all device partitions
- D. Create a VMFS partition
正解：C
解説：
Explanation
When adding a disk to a host that was previously used in a decommissioned vSAN cluster, the disk may still have some vSAN metadata partitions that prevent it from being recognized by disk management. To resolve this issue, the disk partitions need to be deleted using either ESXCLI or partedUtil commands. This will erase all data on the disk and make it available for use in disk management. References: VMware vSAN Specialist v2 EXAM 5V0-22.23, page 21
質問 # 23
A vSAN administrator needs to update vSAN from version 7.0.2 to version 8.0.
Which is the correct order to perform the update?
- A. vCenter -> vSphere -> vSAN on-disk format
- B. vSphere -> vSAN on-disk format -> vCenter
- C. vSphere -> vCenter -> vSAN on-disk format
- D. vSAN on-disk format -> vSphere -> vCenter
正解：A
解説：
Explanation
The correct order to perform the update from vSAN version 7.0.2 to version 8.0 is to upgrade the vCenter Server first, then upgrade the ESXi hosts, and finally upgrade the vSAN on-disk format. This order follows the general vSphere upgrade order, which ensures compatibility and interoperability between different components. Upgrading the vCenter Server first allows it to manage and monitor the ESXi hosts and the vSAN cluster during the upgrade process. Upgrading the ESXi hosts second ensures that they have the latest software patches and drivers for vSAN. Upgrading the vSAN on-disk format last enables the new features and functionality of vSAN 8.0. The other options are not correct, as they do not follow the recommended upgrade order.
質問 # 24
An administrator is performing maintenance on the hosts in a four-node vSAN cluster and has selected the
"Ensure Accessibility" maintenance mode option. All VMs are running with the Default Storage Policy which has not been modified from the default settings.
While one of the hosts in the cluster is down for firmware upgrade, a second host suddenly loses network connectivity to the remaining hosts.
How will the cluster be affected?
- A. Cluster will still be fully operational
- B. All VMs in the cluster will be inaccessible
- C. VMs might experience data loss
- D. The backend performance metrics will be lost
正解：C
解説：
Explanation
If two hosts in a four-node vSAN cluster are down, the cluster might experience data loss because the default storage policy has a Primary level of failures to tolerate (PFTT) of 1, which means that vSAN can tolerate only one host failure. The Ensure accessibility maintenance mode option does not guarantee full data redundancy, but only ensures that all accessible VMs remain accessible. If another host fails while one host is in maintenance mode, some VMs might lose access to their data components and become unavailable or corrupted. References: vSAN Maintenance Mode Options; vSAN Cluster Configuration Limits
質問 # 25
During yesterday's business hours, a cache drive failed on one of the vSAN OSA nodes. The administrator reached out to the manufacturer and received a replacement drive the following day. 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. Physically replace the failed cache device, and vSAN will automatically create a new disk group. Then, remove the disk group with the failed device.
- B. Physically replace the failed cache device, and vSAN will automatically allocate the storage. Then, rebalance the cache layer.
- 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.
C Remove the existing vSAN disk group and physically replace thedevice. Thencheck to verify that the ESXi host automatically detects the new device Afterwardsmanually recreate the Disk Group
正解：B
解説：
Explanation
To replace a failed cache drive in a vSAN OSA cluster, the vSAN administrator should remove the existing vSAN disk group and physically replace the device. Then check to verify that the ESXi host automatically detects the new device Afterwards manually recreate the Disk Group. This is because when a cache drive fails, it affects the entire disk group that contains it, and vSAN does not allow removing only the cache drive from a disk group. Therefore, the administrator must remove the whole disk group before replacing the cache drive, and then recreate it with the new cache drive and the existing capacity drives. The other options are not correct. Physically replacing the failed cache drive without removing the disk group first might cause errors or inconsistencies in vSAN configuration. vSAN will not automatically create a new disk group or allocate storage after replacing a cache drive, as these actions require manual intervention from the administrator.
Rebalancing the cache layer is not necessary after replacing a cache drive, as vSAN will automatically distribute data across all devices in the disk group. References: Replace a Flash Caching Device on a Host; How to manually remove and recreate a vSAN disk group using esxcli
質問 # 26
An administrator has successfully deployed a vSAN Stretched Cluster and needs to ensure that any virtual machines that are created are placed in the appropriate site.
Which two steps are needed to complete this task? (Choose two.)
- A. Create a storage policy that includes site affinity rules and apply to VMs
- B. Create a single VM/Host group across both sites
- C. Create VM/Host groups for the two sites
- D. Put the VMs in the correct VM group
- E. Put the VMs in a vSphere DRS group
正解：A、C
解説：
Explanation
To ensure that any virtual machines that are created are placed in the appropriate site, the administrator needs to create VM/Host groups for the two sites and create a storage policy that includes site affinity rules and apply to VMs. VM/Host groups allow the administrator to group virtual machines and hosts based on their location or preference. Site affinity rules specify which site a virtual machine should be placed on or prefer to run on. A single VM/Host group across both sites would not allow the administrator to control the placement of virtual machines. Putting the VMs in a vSphere DRS group or in the correct VM group would not affect their site affinity. References: 1, page 12; 2, section 3.2
質問 # 27
Refer to the exhibit.
An administrator uses SSH to log into a vSAN ESA host and runs theesxcli vsan debug object overview command.
The administrator notices the Healthy Components column, the last column, is reporting some components are not in a fully healthy state.
What could cause this behavior?
- A. New physical disks have been claimed and a rebalance operation is underway.
- B. One host is in maintenance mode with ensure accessibility.
- C. New VMDKs have been added to multiple VMs, but the storage policy has not finished applying.
- D. The applied Storage policy has been updated.
正解：B
解説：
Explanation
The most likely cause for some components to be not in a fully healthy state is that one host is in maintenance mode with the ensure accessibility option. This option creates temporary durability components on other hosts to maintain the required number of failures to tolerate (FTT) until the original components are restored or rebuilt. These durability components are not considered fully healthy because they do not have full redundancy and might not be compliant with the storage policy. The other options do not explain why some components are not fully healthy, as they do not affect the FTT or the compliance state of the objects.
References: Durability Components; esxcli vsan debug object overview
質問 # 28
A customer has deployed a new vSAN Cluster with the following configuration:
* 6 x vSAN ReadyNodes
* All Flash
* 12 TB Raw Storage
* vSAN 8 is deployed with ESA.
VMs are configured with a RAID-5 VM policy.
During failure testing, before the new platform is placed into production one of the ESXi hosts is made unavailable.
Which RAID-5 data placement schemes will vSAN use with this failure condition?
- A. VMware HA will migrate the storage objects to another node in the cluster
- B. vSAN can protect the platform using adaptive RAID 5 if the ESXi host fails to return
- C. Some VM data will be unavailable until the failed ESXi host is recovered
- D. The data components on the hosts will be marked as degraded
正解：D
解説：
Explanation
When a host in a vSAN stretched cluster goes offline, the data components on the hosts will be marked as degraded. This means that the data is still available, but the redundancy level is reduced. vSAN will try to rebuild the missing components on another host in the same fault domain, if there is enough capacity and resources. If the host comes back online within 60 minutes, vSAN will resync the data and restore the redundancy level. If the host does not come back online within 60 minutes, vSAN will rebuild the missing components on another fault domain, if there is enough capacity and resources. This will incur additional network traffic across the witness link. References: VMware vSAN Specialist v2 EXAM 5V0-22.23, page 17
質問 # 29
A vSAN administrator was presented with 30 additional vSAN ReadyNodes to add to an existing vSAN cluster. There is only one administrator to complete this task.
What is the fastest approach?
- A. Use a Host Profile that was extracted from an existing host
- B. Run vim-cmd to capture, and apply the configuration from an existing host
- C. Launch Quickstart to Add Hosts to a vSAN Cluster
- D. Clone the ESXi boot partition to all new hosts, since the hardware is identical
正解：A
解説：
Explanation
To add 30 additional vSAN ReadyNodes to an existing vSAN cluster with the fastest approach, the vSAN administrator should use a Host Profile that was extracted from an existing host. AHost Profile is a configuration template that captures the settings of a reference host and applies them to other hosts or clusters.
This way, the administrator can quickly and consistently configure multiple hosts with the same settings, such as network, storage, security, and services. The other options are not correct. Running vim-cmd to capture and apply the configuration from an existing host is not as fast or convenient as using a Host Profile, as it requires running commands on each host individually. Launching Quickstart to Add Hosts to a vSAN Cluster is not possible, as Quickstart is only available for new clusters or clusters that were configured through Quickstart.
Cloning the ESXi boot partition to all new hosts is not recommended, as it might cause conflicts or errors with the host identity, network settings, or licenses. References: Configuring Hosts Using Host Profile; Using Quickstart to Configure and Expand a vSAN Cluster
質問 # 30
A vSAN administrator receives a request from the application team to create a virtual machine on a vSAN datastore. The requirements state that the virtual machine needs to be available quickly after a failure occurs.
The solution must minimize administrative effort.
Which vSphere feature should the vSAN administrator implement?
- A. vSphere Distributed Resource Scheduler
- B. vSphere High Availability
- C. Fault Tolerance
- D. Distributed Services Engine
正解：B
解説：
Explanation
vSphere High Availability is the correct answer because it meets the requirements of making the virtual machine available quickly after a failure occurs and minimizing administrative effort. vSphere HA monitors the health and availability of the hosts and virtual machines in a cluster and automatically restarts any failed virtual machines on other hosts within minutes. vSphere HA also supports proactive HA, which can migrate virtual machines from hosts that are about to fail or have degraded performance. vSphere HA is easy to configure and manage, as it only requires enabling HA on the cluster level and setting some basic policies and options. Distributed Services Engine,Fault Tolerance, and vSphere Distributed Resource Scheduler are not valid or optimal solutions for this scenario. Distributed Services Engine is a new feature in vSphere 7 that provides network services such as firewalling, load balancing, routing, and NAT for virtual machines and containers. It does not directly affect the availability or recovery of virtual machines after a failure. Fault Tolerance provides continuous availability for virtual machines by creating a secondary copy of the virtual machine that runs in lockstep with the primary copy on another host. If the primary copy fails, the secondary copy takes over without any interruption or data loss. However, Fault Tolerance has some limitations and overheads, such as requiring dedicated network bandwidth, supporting only one vCPU per virtual machine, and consuming twice as much CPU and memory resources as a single virtual machine. Fault Tolerance also requires more administrative effort than vSphere HA, as it needs to be enabled and configured for each individual virtual machine. vSphere Distributed Resource Scheduler is a feature that balances the workload and resources across a cluster by automatically migrating virtual machines based on their demand and priority.
It does not directly affect the availability or recovery of virtual machines after a failure, although it can work together with vSphere HA to find optimal hosts for restarting failed virtual machines. References:
[VMware vSAN Specialist v2 Exam Preparation Guide], page 11
vSphere Availability
Distributed Services Engine
vSphere Distributed Resource Scheduler
質問 # 31
An administrator has been tasked with upgrading existing vSAN OSA cluster hosts with a SSD cache device per host to a NVMe device (hot plug).
Which fact should guide the administrator's action?
- A. The cache disk drives must have a larger capacity.
- B. The host must be removed from vSAN OSA cluster before changingcache devices.
- C. The disk groupmust be deleted on each physical host in the vSAN OSA cluster to use the NVMe device.
- D. The disk group does not need to be removed before adding new cache.
正解：C
解説：
Explanation
The correct answer is A, the disk group must be deleted on each physical host in the vSAN OSA cluster to use the NVMe device. This is because vSAN OSA uses a disk group configuration where one disk is designated as a cache disk and the rest are capacity disks. To replace the cache disk with a different type or size, the disk group must be deleted first, which will erase all data on the disks and trigger a resynchronization of the affected objects. The administrator should put the host in maintenance mode and choose the option to evacuate all data before deleting the disk group. After replacing the cache disk with the NVMe device, the administrator should recreate the disk group and exit maintenance mode. The other options are incorrect for the following reasons:
B, the disk group does not need to be removed before adding new cache, is incorrect because adding a new cache disk to an existing disk group is not supported in vSAN OSA. The cache disk can only be replaced by deleting and recreating the disk group.
C, the host must be removed from vSAN OSA cluster before changing cache devices, is incorrect because removing the host from the cluster is not necessary and will cause more disruption and data loss than putting the host in maintenance mode. Removing the host will also delete its disk groups and require re-adding them after rejoining the cluster.
D, the cache disk drives must have a larger capacity, is incorrect because there is no requirement for the cache disk to have a larger capacity than the existing one. The cache disk size should be determined by the workload characteristics and performance requirements, not by the expansion process. References:
VMware vSAN Specialist v2 Exam Preparation Guide, page 10
質問 # 32
What are two prerequisites for using the TRIM and UNMAP capability of vSAN? (Choose two.)
- A. Deduplication and compression are enabled.
- B. The vSAN cluster is an all-flash architecture.
- C. The VM quest operating system supports ATA TRIM or SCSI UNMAP capability
- D. TRIM and UNMAP is enabled.
- E. Change the Object Space Reservation to 100.
正解：B、D
解説：
Explanation
The two prerequisites for using the TRIM and UNMAP capability of vSAN are:
B: The vSAN cluster is an all-flash architecture. TRIM and UNMAP are only supported on all-flash vSAN clusters, as they can reclaim space from flash devices that use thin provisioning. TRIM and UNMAP are not supported on hybrid vSAN clusters, as they cannot reclaim space from magnetic disks that use thick provisioning1.
D: TRIM and UNMAP is enabled. TRIM and UNMAP are disabled by default in vSAN, as they might have a performance impact on some workloads. To enable TRIM and UNMAP on a vSAN cluster, the administrator must use the following RVC command: vsan.unmap_support -enable2. After enabling TRIM and UNMAP, the administrator must power off and then power on all VMs that use the vSAN datastore.
質問 # 33
What are two characteristics of a durability component in vSAN? (Choose two.)
- A. Faster snapshot creation
- B. Better Storage utilization
- C. Better Performance
- D. Faster resynchronization
- E. Better Availability
正解：D、E
解説：
Explanation
A durability component is a temporary component that is created when a host or disk group is placed in maintenance mode with the Ensure data accessibility option, or when a host or disk group fails unexpectedly.
A durability component improves the availability of data by maintaining the required number of failures to tolerate (FTT) until the original component is restored or rebuilt. A durability component also speeds up the resynchronization process by reducing the amount of data that needs to be copied. The other characteristics are not applicable to a durability component. References: VMware vSAN Specialist v2 EXAM 5V0-22.23, page
10, Objective 6.8; [Durability Components]
質問 # 34
The vSphere Client reports that the state of some components stored on the vSAN datastore are in the reconfiguring state.
Which situation causes components to enter this state?
- A. The applied storage policy is modified.
- B. Additional storage capacity is added to the cluster.
- C. The cluster is recovering from a vSAN failure.
- D. A host in the cluster enters maintenance mode.
正解：A
解説：
Explanation
The reconfiguring state indicates that some components stored on the vSAN datastore are being moved or resized to meet a new storage policy requirement. This state can occur when the applied storage policy is modified, such as changing the number of failures to tolerate, stripe width, or object space reservation. The other situations will not cause components to enter this state. References: [VMware vSAN Specialist v2 EXAM 5V0-22.23], page 31
質問 # 35
What is the purpose of host rebuild reserve in vSAN?
- A. Stores vSphere HA heartbeats
- B. Reserves space for internal operations
- C. Reserves space in case of single host failure
- D. Allocates capacity for vCLS
正解：C
解説：
Explanation
The host rebuild reserve is a feature that allows vSAN to reserve space in the cluster for vSAN to be able to repair in case of a single host failure. This reservation is set to one host worth of capacity, which means that if one host in the vSAN cluster fails and no longer contributes storage, there is still sufficient capacity remaining in the cluster to rebuild and re-protect all vSAN objects. This feature prevents the creation of new VMs or powering on VMs if such operations consume the reserved space. By default, the host rebuild reserve is disabled, but it can be enabled in the vSAN Services configuration. The other options are not related to the hostrebuild reserve. References: vSAN Capacity Management in v7.0U1; Configure Reserved Capacity
質問 # 36
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