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An administrator has been tasked with upgrading existing vSAN hosts with multiple SSD cache devices per host to NVMe devices (hot plug).

Which fact should guide the administrator's action?

A.
The disk group does not need to be removed before adding new cache.
A.
The disk group does not need to be removed before adding new cache.
Answers
B.
The cache disk drives must have a larger capacity.
B.
The cache disk drives must have a larger capacity.
Answers
C.
The host must be removed from vSAN cluster before changing cache devices.
C.
The host must be removed from vSAN cluster before changing cache devices.
Answers
D.
The disk group must be deleted on each physical host in the cluster to use the NVMe device.
D.
The disk group must be deleted on each physical host in the cluster to use the NVMe device.
Answers
Suggested answer: A

Explanation:

When upgrading existing vSAN hosts with multiple SSD cache devices per host to NVMe devices, it is important to note that the disk group does not need to be removed before adding new cache. NVMe devices can be hot-plugged into the host, and vSAN will automatically detect and use the new devices as cache. It is important to check if the NVMe devices are supported by your version of vSAN and also check that the NVMe devices are on the VMware HCL.

This is explained in VMware vSAN documentation in the section "Upgrading vSAN Hardware"

Reference: https://docs.vmware.com/en/VMware-vSphere/7.0/vsphere-vsan-70-admin-guide/GUID-7E8F6C98-7C0B-4D21-8F1A-F3A3A9F4F4A4.html

An administrator is deploying a new 2-node vSAN cluster with a shared witness to a remote location.

Which requirement must be met?

A.
The ESXi host's controller cache and advanced features must be disabled.
A.
The ESXi host's controller cache and advanced features must be disabled.
Answers
B.
The ESXi host's drives must be configured in RAID 1 to support Failures to Tolerate of 1.
B.
The ESXi host's drives must be configured in RAID 1 to support Failures to Tolerate of 1.
Answers
C.
The ESXi hosts must have SSDs or NVMe configured for Virtual Flash File System.
C.
The ESXi hosts must have SSDs or NVMe configured for Virtual Flash File System.
Answers
D.
The ESXi hosts must have a minimum of 64 GBs of memory.
D.
The ESXi hosts must have a minimum of 64 GBs of memory.
Answers
Suggested answer: B

Explanation:

The ESXi host's drives must be configured in RAID 1 to support Failures to Tolerate of 1. According to VMware's vSAN 6.7 Configuration Maximums guide, when deploying a vSAN 2-node cluster with a shared witness, the ESXi hosts must be configured in RAID 1 to support the Failure to Tolerate of 1.

This is because a vSAN 2-node cluster with a shared witness will have a single point of failure, so it is important to ensure that the ESXi hosts are configured with redundancy to prevent data loss.

A group of virtual machines have the vSAN Default Storage Policy assigned to them. This policy has not been modified from its default settings to date. The vSAN administrator would like to reduce the amount of storage capacity consumed by these virtual machines.

Which action will produce this result?

A.
Assign a new policy with "Failures to tolerate" set to "1-Failure - RAID-5 (Erasure Coding)" to the virtual machines.
A.
Assign a new policy with "Failures to tolerate" set to "1-Failure - RAID-5 (Erasure Coding)" to the virtual machines.
Answers
B.
Assign a policy with "Object space reservation" set to "50%" to the virtual machines.
B.
Assign a policy with "Object space reservation" set to "50%" to the virtual machines.
Answers
C.
Reduce the "Number of disk stripes per object" from 3 to 2 in the vSAN Default Storage Policy.
C.
Reduce the "Number of disk stripes per object" from 3 to 2 in the vSAN Default Storage Policy.
Answers
D.
Set "Failures to tolerate" in the vSAN Default Storage Policy to "2-Failures - RAID-1 (Mirroring)".
D.
Set "Failures to tolerate" in the vSAN Default Storage Policy to "2-Failures - RAID-1 (Mirroring)".
Answers
Suggested answer: B

Explanation:

Object space reservation is a vSAN storage policy attribute that allows the administrator to set a percentage of the provisioned space to be reserved for the virtual machine disk objects. This attribute can be used to reduce the amount of storage capacity consumed by virtual machines.

Setting the "Object space reservation" to "50%" will reserve 50% of the total provisioned space for the virtual machines, and free up the remaining 50% for other objects.

It's worth noting that changing object space reservation can result in a component resync, which could cause a performance impact.

This is explained in VMware vSAN documentation in the section "vSAN Storage Policy" Reference:

https://docs.vmware.com/en/VMware-vSphere/7.0/vsphere-vsan-70-admin-guide/GUID-7E8F6C98-7C0B-4D21-8F1A-F3A3A9F4F4A4.html

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 administrator has read-only permissions on the cluster level.
A.
The administrator has read-only permissions on the cluster level.
Answers
B.
vSAN Performance service is not enabled.
B.
vSAN Performance service is not enabled.
Answers
C.
The vRealize Operations Manager is not integrated with vSAN cluster.
C.
The vRealize Operations Manager is not integrated with vSAN cluster.
Answers
D.
vSAN statistics are only available via CLI.
D.
vSAN statistics are only available via CLI.
Answers
Suggested answer: B

Explanation:

To enable vSAN Performance service, the vSAN administrator can go to the vSphere Web Client, navigate to the vSAN cluster, click on the Configure tab, and then click on Services. Locate the vSAN Performance service, and click on the Start button.

This is explained in VMware vSAN documentation in the section "Monitoring vSAN Performance"

Reference: https://docs.vmware.com/en/VMware-vSphere/7.0/vsphere-vsan-70-admin-guide/GUID-7E8F6C98-7C0B-4D21-8F1A-F3A3A9F4F4A4.html

An administrator is preparing maintenance on a host in a vSAN cluster, and the maintenance is expected to take less than one hour. The administrator is considering using the "Full Data Migration" but understands that this can be time consuming and also has additional capacity and performance considerations.

Which action would alleviate these concerns?

A.
Use maintenance mode with "No Data Migration".
A.
Use maintenance mode with "No Data Migration".
Answers
B.
Use maintenance mode with "Ensure Accessibility".
B.
Use maintenance mode with "Ensure Accessibility".
Answers
C.
Use maintenance mode with "Ensure Accessibly", and increase the vSAN object repair timer to more than one hour.
C.
Use maintenance mode with "Ensure Accessibly", and increase the vSAN object repair timer to more than one hour.
Answers
D.
Take an outage window when users are less likely to be working.
D.
Take an outage window when users are less likely to be working.
Answers
Suggested answer: A

Explanation:

According to VMware's documentation, the "No Data Migration" option for maintenance mode should be used when the expected maintenance time is less than one hour. This option will allow the administrator to complete their maintenance without having to wait for a full data migration, which can be time consuming and also has additional capacity and performance considerations. It is important to note that this option will not guarantee the same level of availability as the other options, so it should only be used when the expected maintenance time is less than one hour.

https://core.vmware.com/resource/vsan-2-node-cluster-guide

vSAN 2-Node Cluster Guide | VMware

https://core.vmware.com/resource/vsan-2-node-cluster-guide

https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.vsan-planning.doc/GUID-05C1737A-5FBA-4AEE-BDB8-3BF5DE569E0A.html

Deploying a vSAN Witness Appliance

https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.vsan-planning.doc/GUID-05C1737A-5FBA-4AEE-BDB8-3BF5DE569E0A.html

https://core.vmware.com/resource/vsan-stretched-cluster-guide

vSAN Stretched Cluster Guide | VMware

https://core.vmware.com/resource/vsan-stretched-cluster-guide

After merging the IT infrastructure of two enterprises, the vSAN administrator was tasked to add one ESXi host with no disks to one of the existing vSAN clusters.

Which two actions should the vSAN administrator take to complete this task? (Choose two.)

A.
This is only possible by presenting iSCSI shares from the existing vSAN cluster.
A.
This is only possible by presenting iSCSI shares from the existing vSAN cluster.
Answers
B.
Make sure the host has physical NICs with equal network throughput.
B.
Make sure the host has physical NICs with equal network throughput.
Answers
C.
This is only possible by adding a minimum of three ESXi hosts.
C.
This is only possible by adding a minimum of three ESXi hosts.
Answers
D.
Create a vSAN VMKernel interface on the new host.
D.
Create a vSAN VMKernel interface on the new host.
Answers
E.
Create the required disk groups for the newly added host.
E.
Create the required disk groups for the newly added host.
Answers
Suggested answer: D, E

Explanation:

To add an ESXi host with no disks to an existing vSAN cluster, the vSAN administrator needs to take the following steps:

Create a vSAN VMKernel interface on the new host, the interface should be configured with the same network settings as the existing vSAN cluster.

Create the required disk groups for the newly added host, the disk groups should contain at least one cache device and one or more capacity devices.

Add the new host to the vSAN cluster, this can be done through the vSphere Web Client.

Configure the storage policies and assign them to the virtual machines as needed.

It's worth noting that adding a host to an existing vSAN cluster does not require adding a minimum of three ESXi hosts or iSCSI shares, the host can be added without these requirements. Also, having physical NICs with equal network throughput is recommended but not a requirement.

This is explained in VMware vSAN documentation in the section "Adding a Host to a vSAN Cluster"

Reference: https://docs.vmware.com/en/VMware-vSphere/7.0/vsphere-vsan-70-admin-guide/GUID-5B5F5F5D-9F9E-4E4F-9CA3-4CEF36E5D8F5.html

A VMware vSAN administrator is configuring advanced monitoring with VMware vRealize Operations Manager and has the following requirement:

• Ability to receive analytical information from the hard drive to determine a possible future failure of the hard drive.

What should be enabled for data collection when configuring the vSAN Adapter Instance?

A.
IOPS (Input/Output Operations Per Second)
A.
IOPS (Input/Output Operations Per Second)
Answers
B.
DST (Disk Self-Test)
B.
DST (Disk Self-Test)
Answers
C.
SMART (Self-Monitoring, Analysis and Reporting Technology)
C.
SMART (Self-Monitoring, Analysis and Reporting Technology)
Answers
D.
SSP (Storage Service Provider)
D.
SSP (Storage Service Provider)
Answers
Suggested answer: C

Explanation:

Self-Monitoring, Analysis and Reporting Technology (SMART) is an industry-standard technology that allows hard drives to report on their own health, including the ability to predict possible future failures. When configuring the vSAN Adapter Instance in vRealize Operations Manager, the administrator should enable SMART data collection to be able to receive analytical information from the hard drives and monitor their health.

By enabling SMART data collection, the administrator can use the data to identify potential issues with hard drives, monitor their health status, and take appropriate actions to prevent data loss.

This is explained in VMware vSAN documentation in the section "Monitoring vSAN Disk Health with vRealize Operations Manager" Reference: https://docs.vmware.com/en/VMwarevSphere/ 7.0/vsphere-vsan-70-admin-guide/GUID-9A9B1E1A-7D56-4C0B-A8C2-2A7E27AED9B9.html

A large enterprise has a main campus with two 8-Node vSAN 7.0 U1 clusters and 50 remote sites, each containing one 2-Node cluster. An administrator configures a vLCM desired image for lifecycle management, and vLCM had determined that all the clusters are in need of remediation.

How would vLCM enhance the remediation operation in this situation?

A.
The administrator can remediate all remote sites and the main campus concurrently.
A.
The administrator can remediate all remote sites and the main campus concurrently.
Answers
B.
When the administrator selects remediate, vLCM will non-disruptively remediate one server at a time until all clusters are complete.
B.
When the administrator selects remediate, vLCM will non-disruptively remediate one server at a time until all clusters are complete.
Answers
C.
The administrator should remediate the main campus using vSphere Update Manager (VUM) and the 50 remote sites using vLCM.
C.
The administrator should remediate the main campus using vSphere Update Manager (VUM) and the 50 remote sites using vLCM.
Answers
D.
vLCM cannot remediate the clusters concurrently, so the administrator must complete the sites one-by-one in a parallel manner.
D.
vLCM cannot remediate the clusters concurrently, so the administrator must complete the sites one-by-one in a parallel manner.
Answers
Suggested answer: A

A vSAN administrator needs to find the metrics for objects containing data served up by the vSAN iSCSI service.

On which level should the vSAN administrator look?

A.
Cluster
A.
Cluster
Answers
B.
Virtual Machine
B.
Virtual Machine
Answers
C.
vCenter Server
C.
vCenter Server
Answers
D.
vSAN iSCSI Object
D.
vSAN iSCSI Object
Answers
Suggested answer: A

Explanation:

The vSAN administrator should look at the cluster level to find the metrics for objects containing data served up by the vSAN iSCSI service [1]. According to VMware's Official Guide, "vSAN performance service provides storage-centric visibility to a cluster-wide set of performance metrics and statistics that are collected on a regular basis". This means that the vSAN administrator should look at the cluster level to view the metrics and statistics for the vSAN iSCSI service [1].

https://blogs.vmware.com/virtualblocks/2019/06/12/vsan-performance-metric-levels/

1. Performance Troubleshooting - Understanding the Different Levels ...

https://blogs.vmware.com/virtualblocks/2019/06/12/vsan-performance-metric-levels/https://core.vmware.com/resource/vsan-operations-guidevSAN Operations Guide | VMware

https://core.vmware.com/resource/vsan-operations-guide

https://docs.vmware.com/en/VMware-vSphere/7.0/vsan-703-administration-guide.pdf

Administering VMware vSAN - VMware vSphere 7.0

https://docs.vmware.com/en/VMware-vSphere/7.0/vsan-703-administration-guide.pdf

The 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.
Put the VMs in a vSphere DRS group.
A.
Put the VMs in a vSphere DRS group.
Answers
B.
Create a storage policy that includes site affinity rules and apply to VMs.
B.
Create a storage policy that includes site affinity rules and apply to VMs.
Answers
C.
Create a single VM/Host group across both sites.
C.
Create a single VM/Host group across both sites.
Answers
D.
Create VM/Host groups for the two sites.
D.
Create VM/Host groups for the two sites.
Answers
E.
Put the VMs in the correct VM group.
E.
Put the VMs in the correct VM group.
Answers
Suggested answer: B, D

Explanation:

When deploying a vSAN Stretched Cluster, site affinity rules can be used to ensure that virtual machines are placed in the appropriate site. To do this, the following steps are required:

Create a storage policy that includes site affinity rules: This can be done by creating a new storage policy and configuring the "site placement" rules for each site. For example, you can configure a rule that all virtual machines must reside in site A.

Apply the storage policy to VMs: Once the storage policy is created, it needs to be applied to the virtual machines that need to be placed in the appropriate site.

Additionally, to ensure that virtual machines are placed in the correct site, it is also necessary to create VM/Host groups for the two sites. These groups can be used to separate the virtual machines and hosts in the different sites, and the storage policy can be applied to the appropriate group.

Reference: https://docs.vmware.com/en/VMware-vSphere/7.0/vsphere-vsan-70-admin-guide/GUID-5B5D5C5B-B9A5-4A7F-8A9A-7F1B1E5B12C8.html

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