The three main categories for reclamation that are available to the administrator in the Reclaim view on the Home Screen navigation are orphaned disks, snapshots, and powered off VMs.The Reclaim view is a feature of vRealize Operations that allows the administrator to identify and reclaim the wasted or unused resources in the environment, such as storage, CPU, and memory1. The Reclaim view shows the potential savings and the actions that can be taken to reclaim the resources for each category.The orphaned disks category shows the virtual disks that are not associated with any virtual machine, and that can be deleted to free up storage space2.The snapshots category shows the snapshots that are older than a specified age, and that can be deleted to free up storage space and improve performance3.The powered off VMs category shows the virtual machines that are powered off for more than a specified period, and that can be deleted or archived to free up storage, CPU, and memory resources4. The unused datastores category (option A) is not a main category for reclamation that is available in the Reclaim view, as it is not a source of wasted or unused resources.The unused datastores are datastores that are not used by any virtual machine or host, and that can be removed from the inventory or assigned to other objects5. The VM disks utilized %10 or less category (option E) is not a main category for reclamation that is available in the Reclaim view, as it is not a source of wasted or unused resources.The VM disks utilized %10 or less are virtual disks that have low utilization, and that can be resized to reduce the allocated storage space6. The unused hosts category (option F) is not a main category for reclamation that is available in the Reclaim view, as it is not a source of wasted or unused resources. The unused hosts are hosts that are not used by any virtual machine or cluster, and that can be removed from the inventory or assigned to other objects.References:

1: vRealize Operations Manager User Guide, VMware, 2021, p. 77.

2: vRealize Operations Manager User Guide, VMware, 2021, p. 78.

3: vRealize Operations Manager User Guide, VMware, 2021, p. 79.

4: vRealize Operations Manager User Guide, VMware, 2021, p. 80.

5: vRealize Operations Manager User Guide, VMware, 2021, p. 81.

6: vRealize Operations Manager User Guide, VMware, 2021, p. 82.

[7]: vRealize Operations Manager User Guide, VMware, 2021, p. 83.

According to the VMware vRealize Operations Reference Materials, the allocation model is a capacity model that allows you to define the overcommit ratios for CPU and memory resources for your clusters. The allocation model helps you to avoid overcommitment for business-critical workloads and to comply with contractual obligations or SLAs. The allocation model calculates the capacity based on the configured overcommit ratios and the reserved capacity for the clusters. In this case, the company policy states that the clusters should never have greater than a 4:1 virtual to physical CPU ratio and a 1:1 virtual to physical memory ratio. Therefore, the allocation model should be configured for those clusters in vRealize Operations with the same overcommit ratios. This way, the capacity analytics will reflect the company policy and help to plan for infrastructure procurement or migrations based on the projection and avoid the risk of capacity shortage and high infrastructure costs. Therefore, option A is correct.

The other options are not correct because they are not capacity models that can be configured for the clusters in vRealize Operations. Option B is not correct because the demand model is a capacity model that calculates the capacity based on the actual demand for resources in the clusters. The demand model does not consider the overcommit ratios or the reserved capacity for the clusters. The demand model aims to drive towards the most efficient utilization of the clusters based on the historical utilization and the projected utilization. Option C is not correct because the limit model is not a term used in vRealize Operations, but in vSphere. The limit model is a setting that specifies the upper limit of resources that can be consumed by a virtual machine. Option D is not correct because the reservation model is not a term used in vRealize Operations, but in vSphere. The reservation model is a setting that specifies the minimum amount of resources that are guaranteed to a virtual machine.References:

Allocation Model for Capacity Management in vRealize Operations 7.5

Capacity Analytics

Configuring Policies

A vRealize Operations cluster in a Continuous Availability configuration consists of three node types: primary node, primary replica node, and witness node. These node types are deployed across two fault domains, which are separate physical locations that can tolerate failures of an entire rack or site.The witness node is deployed in a third location to monitor the network connectivity between the two fault domains and prevent split-brain scenarios1.

The primary node is the first node that is deployed in the cluster and acts as the master node. It is responsible for managing the cluster configuration, user interface, alerting, and reporting.The primary node is deployed in fault domain 11.

The primary replica node is the second node that is deployed in the cluster and acts as the backup node for the primary node. It is responsible for replicating and synchronizing the data and configuration from the primary node. The primary replica node can take over the functions of the primary node in case of a failure.The primary replica node is deployed in fault domain 21.

The witness node is the third node that is deployed in the cluster and acts as the arbitrator node. It is responsible for monitoring the network connectivity and availability of the primary node and the primary replica node. The witness node can detect a split-brain situation, which occurs when the network connection between the two fault domains is lost and both nodes assume the role of the master node. The witness node can resolve the split-brain situation by making one of the nodes offline to avoid data inconsistency.The witness node is deployed in a third location that is independent of the two fault domains1.

The other options are not node types that are configured in a Continuous Availability configuration. A secondary node is a node that is added to the cluster to increase the capacity and performance of the cluster.A secondary node can be deployed in either fault domain, but it is not required for Continuous Availability1. A remote collector node is a node that is deployed outside the cluster to collect data from remote or isolated data sources.A remote collector node can be deployed in any location, but it is not part of the Continuous Availability configuration2. A secondary replica node is not a valid node type in vRealize Operations.

References:1:About vRealize Operations Continuous Availability2:Remote Collector Nodes

A support bundle is a collection of log and configuration files that can help troubleshoot a vROps issue. To create a support bundle, the system administrator can use the vROps UI and select the option to create a light or full support bundle. A light support bundle includes 24 hours of logs, while a full support bundle includes all available logs and configuration files. For an intermittent issue that occurred in the last 12 hours, a light support bundle should be sufficient to collect the relevant information.The system administrator can also select the cluster nodes that need to be evaluated for support, and download the support bundle in ZIP format for analysis or sending to VMware Technical Support1. The other options are not recommended or efficient ways to collect the relevant information. Collecting the vCenter and vROps primary node logs using SSH and the vm-support utility would not include the logs from the other vROps nodes, and would require manual steps to gather and compress the files. Using the vROps UI to create a full support bundle for ESXi, vCenter, and primary vROps nodes would include unnecessary and excessive data that could slow down the process and consume more disk space.Using SSH to copy the log files from each of the vROps nodes from /var/log/warn & /var/log/messages locations would also require manual steps to gather and compress the files, and would not include the configuration files that could be useful for troubleshooting.References:1:Create a vRealize Operations Support Bundle

According to the VMware vRealize Operations User Guide1, vRealize Operations allows the user to perform various actions on vSphere virtual machines from the product UI. These actions can help to manage, optimize, and troubleshoot the virtual machines and their resources. Some of the actions that can be performed on vSphere virtual machines from vRealize Operations product UI are:

Create virtual machine snapshot: This action creates a snapshot of the virtual machine, which is a point-in-time copy of the virtual machine state and data. A snapshot can be used to revert the virtual machine to a previous state, or to clone or migrate the virtual machine. The user can specify the name, description, and memory options for the snapshot.

Delete virtual machine snapshot: This action deletes a snapshot of the virtual machine, which frees up the disk space used by the snapshot. The user can select the snapshot to delete from a list of available snapshots for the virtual machine.

Move virtual machine: This action moves the virtual machine to a different host or cluster within the same vCenter Server. The user can select the destination host or cluster from a list of compatible and available options. The move action can help to balance the workload or improve the performance of the virtual machine.

Therefore, the correct answers are A. Create virtual machine snapshot, B. Delete virtual machine snapshot, and C. Move virtual machine, as these are three of the actions that can be performed on vSphere virtual machines from vRealize Operations product UI.References:

1: VMware vRealize Operations User Guide, https://docs.vmware.com/en/vRealize-Operations/8.5/vrealize-operations-manager-85-user-guide.pdf, page 31-32, 34-35, 37-38