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Which statement accurately describes the result when proper VM Storage Policy Affinity Rules on a stretched vSAN cluster are set?

A.
When a site is disconnected, the VM will lose access to its VMDK.
A.
When a site is disconnected, the VM will lose access to its VMDK.
Answers
B.
When a site is disconnected, the VM will continue to have access to its VMDK.
B.
When a site is disconnected, the VM will continue to have access to its VMDK.
Answers
C.
Bandwidth is unnecessarily sent across the inter-site link.
C.
Bandwidth is unnecessarily sent across the inter-site link.
Answers
D.
Proper policies result in higher inter-site bandwidth utilization.
D.
Proper policies result in higher inter-site bandwidth utilization.
Answers
Suggested answer: B

Explanation:

Setting proper VM/Host Group Rules and VM Storage Policy Affinity Rules are beneficial for several reasons Bandwidth is not unnecessarily sent across the inter-site link Lower inter-site bandwidth utilization In the situation where the alternate site is disconnected, the VM will continue to have access to its vmdk. from https://core.vmware.com/resource/vsan-stretched-cluster-guide#sec7341-sub5

A cache disk failure marked a vSAN disk group as failed, and the data is being rebuilt on other disk groups.

Which action should the vSAN administrator take to reduce the negative impact on the VMs?

A.
Enabling Resync Throttling
A.
Enabling Resync Throttling
Answers
B.
Enabling Maintenance mode with no data evacuation
B.
Enabling Maintenance mode with no data evacuation
Answers
C.
Enabling automatic rebalance
C.
Enabling automatic rebalance
Answers
D.
Setting the vSAN policy's IOPS limit for object value to 0 (unlimited)
D.
Setting the vSAN policy's IOPS limit for object value to 0 (unlimited)
Answers
Suggested answer: A

Explanation:

https://docs.vmware.com/es/VMware-vSphere/6.5/com.vmware.vsphere.virtualsan.doc/GUID-8D81FCF6-AC9A-4C2C-A8AC-DE50B9965054.html

An architect is tasked to design a VMware Horizon Solution with vSAN. The architect needs to use a solution to host the user's profile shares in a highly available manner, and it must be guest OS independent.

Which solution will match these requirements?

A.
Cluster out of the box
A.
Cluster out of the box
Answers
B.
Cluster in a box
B.
Cluster in a box
Answers
C.
NFS on vSAN
C.
NFS on vSAN
Answers
D.
iSCSI on vSAN
D.
iSCSI on vSAN
Answers
Suggested answer: C

Explanation:

Os independent is the requirements and High Availability. So vSAN 7 enable NFS and SMB on s SPBM cluster in wich Windows, Linux and MAC could have user profile with business continuity. Ref: https://core.vmware.com/blog/redirecting-user-profiles-and-data-using-fslogix-and-vsan-file-services

During a design workshop for a stretched vSAN cluster, the requirement that some of the VMs be configured with no-mirror between sites was discussed.

Which three recommendations should the architect provide to address an event of a network partition between two sites? (Choose three.)

A.
Host isolation response must exclude the VMs required
A.
Host isolation response must exclude the VMs required
Answers
B.
The default gateway must be used as the only isolation address
B.
The default gateway must be used as the only isolation address
Answers
C.
One of isolation addresses should reside in the site 1 data center
C.
One of isolation addresses should reside in the site 1 data center
Answers
D.
VMware vSphere DRS rules to force the VMs to run where the data resides
D.
VMware vSphere DRS rules to force the VMs to run where the data resides
Answers
E.
One isolation address reachable only from the witness appliance in both sites
E.
One isolation address reachable only from the witness appliance in both sites
Answers
F.
One of isolation addresses should reside in the site 2 data center
F.
One of isolation addresses should reside in the site 2 data center
Answers
Suggested answer: C, D, F

Explanation:

Network Isolation Response and Multiple Isolation Response Addresses In a Virtual SAN Stretched Cluster, one of the isolation addresses should reside in the site 1 datacenter and the other should reside in the site 2 datacenter. This would enable vSphere HA to validate complete network isolation in the case of a connection failure between sites. https://www.vmware.com/content/dam/digitalmarketing/vmware/en/pdf/techpaper/VMware-Virtual-SAN-6.1-Stretched-Cluster-Guide.pdf/subassets/page38.pdf

An 8-Node vSAN Stretched Cluster (4+4+1) with a single disk group has a policy with PFTT=1 (mirrored across sites) and SFTT=1/FTM Mirroring (Local Protection) configured.

The administrator has been alerted that there is a problem with the cluster. The following has been observed:

* The vSAN Witness Host is offline.

* Two disk failures on two hosts have occurred in the preferred site.

This has resulted in a critical production virtual machine's vmdk becoming inaccessible.

Which step needs to be performed by the administrator to resolve the issue?

A.
Replace all failed disks on the preferred site.
A.
Replace all failed disks on the preferred site.
Answers
B.
Replace the vSAN Witness Host
B.
Replace the vSAN Witness Host
Answers
C.
Replace access to the existing vSAN Witness Host
C.
Replace access to the existing vSAN Witness Host
Answers
D.
Replace only one failed disk on the preferred site.
D.
Replace only one failed disk on the preferred site.
Answers
Suggested answer: C

Explanation:

the vSAN Witness Host offline and 2 failures in the Preferred Site. In each of the above failure cases, restoring access to the existing vSAN Witness would make the object accessible. ... Deploying a new vSAN Witness would not because the components would not be present. https://core.vmware.com/resource/vsan-stretched-cluster-guide#sec7373-sub5

An administrator is tasked to create a custom storage policy for workloads and is including additional disk stripes while defining the storage policy.

What is the main purpose of this practice?

A.
To increase available storage space
A.
To increase available storage space
Answers
B.
To set a failure tolerance
B.
To set a failure tolerance
Answers
C.
To improve performance
C.
To improve performance
Answers
D.
To reconstruct corrupted data
D.
To reconstruct corrupted data
Answers
Suggested answer: C

Explanation:

https://blogs.vmware.com/virtualblocks/2016/09/19/vsan-stripes/ Striping may help performance if certain virtual machines are I/O intensive and others are not.

The ''number of disk stripes per object'' storage policy rule attempts to improve performance by distributing data contained in a single object (such as a VMDK) across more capacity devices. https://blogs.vmware.com/virtualblocks/2021/01/21/stripe-width-improvements-in-vsan-7-u1/

An architect collected the below technical requirements from the customer during a vSAN cluster design workshop:

* Maximize the vSAN datastore usable capacity.

* Deduplication and compression are required to help utilize available capacity efficiency.

* Ensure the highest level of resiliency wherever possible.

Which disk group configuration should the architect include in the design?

A.
One disk group per host, with one cache tier flash disk and four capacity tier flash disks.
A.
One disk group per host, with one cache tier flash disk and four capacity tier flash disks.
Answers
B.
Two disk groups per host, each with one cache tier flash disk and four capacity tier flash disks.
B.
Two disk groups per host, each with one cache tier flash disk and four capacity tier flash disks.
Answers
C.
Two disk groups per host, each with one cache tier flash disk and six capacity tier flash disks.
C.
Two disk groups per host, each with one cache tier flash disk and six capacity tier flash disks.
Answers
D.
Two disk groups per host, each with one cache tier flash disk and six capacity tier magnetic disks.
D.
Two disk groups per host, each with one cache tier flash disk and six capacity tier magnetic disks.
Answers
Suggested answer: C

An architect is working with an All-Flash vSAN configuration and will be using the Flash Caching Devices in vSAN.

Which requirement is specifically needed for these devices?

A.
Write endurance
A.
Write endurance
Answers
B.
IOPS
B.
IOPS
Answers
C.
Read endurance
C.
Read endurance
Answers
D.
Capacity
D.
Capacity
Answers
Suggested answer: A

Explanation:

In all-flash configurations, vSAN uses the cache layer for write caching only. The write cache must be able to handle high write activities. https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.vsan-planning.doc/GUID-1D6AD25A-459A-43D6-8FF5-52475499D6A2.html

An architect is designing a vSAN cluster.

Which storage controller option will yield optimal performance?

A.
Hugh queue depth
A.
Hugh queue depth
Answers
B.
Set caching to 50% read on the controller
B.
Set caching to 50% read on the controller
Answers
C.
Enable battery write-back caching
C.
Enable battery write-back caching
Answers
D.
RAID 0
D.
RAID 0
Answers
Suggested answer: A

Explanation:

Storage Controller Queue Depth There are two important items displayed by the VCG for storage I/O controllers that should be noted. The first of these is ''features'' and the second is queue depth. Queue depth is extremely important, as issues have been observed with controllers that have very small queue depths. In particular, controllers with small queue depths (less than 256) can impact virtual machine I/O performance when vSAN is rebuilding components, either due to a failure or when requested to do so when entering maintenance mode. Design Decision : Choose storage I/O controllers that have as large a queue depth as possible. While 256 are the minimum, the recommendation would be to choose a controller with a much larger queue depth where possible. https://core.vmware.com/resource/vmware-vsan-design-guide#sec6843-sub14

An administrator is planning to deploy cloud-native workloads onto the vSAN Direct datastore.

Which storage policy structure rule is supported?

A.
Host-based rules
A.
Host-based rules
Answers
B.
vVOL storage rules
B.
vVOL storage rules
Answers
C.
Tag-based placement rules
C.
Tag-based placement rules
Answers
D.
Storage performance-based rules
D.
Storage performance-based rules
Answers
Suggested answer: C

Explanation:

https://docs.vmware.com/en/VMware-vSphere/7.0/vmware-vsphere-with-tanzu/GUID-40E5FD5C-E9A0-4D6D-8429-0DD5FE5F0E9F.html

https://4sysops.com/archives/how-to-configure-vmware-vsan-direct-on-vsphere-7-u1/

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