Exam AZ-140 topic 2 question 31 discussion

Answer is C Two VMs on Azure IaaS (+ Cloud Witness) or at least three VMs without and costs for disks https://learn.microsoft.com/en-us/azure/virtual-desktop/store-fslogix-profile#azure-platform-details

Required infrastructure: "Two VMs on Azure IaaS (+ Cloud Witness) or at least three VMs without and costs for disks" https://learn.microsoft.com/en-us/azure/virtual-desktop/store-fslogix-profile Option B (2 VMs + a file share as a witness) may be supported by the article below, but I believe the question is about what was mentioned in the 1st article. "A two-server deployment requires a cluster witness, otherwise either server going offline causes the other to become unavailable as well. With these systems, you can use a file share as a witness, or use cloud witness." https://learn.microsoft.com/en-us/windows-server/storage/storage-spaces/deploy-storage-spaces-direct

Answer B: You can create a cluster with two nodes, you can create a cloud witness on a file share, Storage account or other valid options. Question does say that they are not going to use a cloud witness, hence files share cloud witness will make the solution work.

C is correct A two-server deployment requires a cluster witness, otherwise either server going offline causes the other to become unavailable as well. With these systems, you can use a file share as a witness, or use cloud witness.

B. 2 When deploying Storage Spaces Direct in a virtualized environment, the minimum number of nodes (or virtual machines) required is two(2). However, it’s important to note that two-node deployments must configure a witness (Cloud Witness or File Share Witness). Since your cluster will not use a Cloud witness, you would need to configure a File Share Witness. Please ensure to follow the recommended guidelines when deploying in Azure IaaS VMs

It's confusing... The article here says 2... https://learn.microsoft.com/en-us/windows-server/storage/storage-spaces/storage-spaces-direct-hardware-requirements#servers:~:text=Minimum%20of%202%20servers%2C%20maximum%20of%2016%20servers

The MINIMUM number of virtual machines required for a Storage Spaces Direct cluster that will store FSLogix profile containers and will not use a Cloud witness is 4. This is because Storage Spaces Direct requires a minimum of three nodes to provide fault tolerance and data availability

It says; not using cloud witness. Disk witness is possible but also File Share witness. So 2 nodes is possible.

A Disk Witness isn't supported with Storage Spaces Direct.

You can setup a disk witness in one of the servers. This is not an optimal setup but this will bring the number of servers to 2. This means that the answer is "B" .

The minimum number of virtual machines required to deploy a Storage Spaces Direct cluster for storing FSLogix profile containers in Azure Virtual Desktop is two. However, for optimal performance and resiliency, it's recommended to consider a larger cluster with more nodes if possible.

Answer is C. 3 "Two VMs on Azure IaaS (+ Cloud Witness) or at least three VMs without and costs for disks"

"A typical cluster quorum configuration in this setup (automatic failover SLA) gives each node a vote. One extra vote is given to the quorum witness to allow cluster to keep running even if either one of the datacenter experiences a power outage. The math is simple - there are 5 total votes and you need 3 votes for the cluster to keep it running." https://learn.microsoft.com/en-us/windows-server/failover-clustering/deploy-cloud-witness I was leaning towards answer C but you need 3 votes to keep the cluster running. If 1 is down you only have two votes left.

Correct answer is C From this article: https://learn.microsoft.com/en-us/windows-server/storage/storage-spaces/deploy-storage-spaces-direct "A two-server deployment requires a cluster witness" This means that the minimum required VMs without a cloud witness are 3. That could include 3 Cluster VMs, or 2 Cluster VMs plus 1 more VM that contains a file share witness.

Storage Spaces Direct is a software-defined storage solution that allows you to share storage resources in your converged and hyperconverged IT infrastructure. It enables you to combine internal storage drives on a cluster of physical servers (2 and up to 16) into a software-defined pool of storage. https://learn.microsoft.com/en-us/azure-stack/hci/concepts/storage-spaces-direct-overview?toc=%2Fwindows-server%2Fstorage%2Ftoc.json&bc=%2Fwindows-server%2Fbreadcrumbs%2Ftoc.json#what-is-storage-spaces-direct

https://learn.microsoft.com/en-us/windows-server/storage/storage-spaces/deploy-storage-spaces-direct Step 3.4: Configure a cluster witness We recommend that you configure a witness for the cluster, so clusters with three or more servers can withstand two servers failing or being offline. A two-server deployment requires a cluster witness, otherwise either server going offline causes the other to become unavailable as well. With these systems, you can use a file share as a witness, or use cloud witness.

Storage Spaces Direct (S2D) requires a minimum of four servers for the cluster. The four servers are used to create a quorum, which helps to ensure high availability of the storage. Without a quorum, data loss or corruption may occur if one of the servers in the cluster fails. Additionally, using a Cloud witness is an optional feature that can be used to provide an additional witness vote when using a stretched cluster, it does not affect the minimum number of virtual machines required for the cluster. So, a minimum of 4 virtual machines are required for the cluster to store FSLogix profile containers and use Storage Spaces Direct.