How should the resource pools be designed to host the infrastructure workloads and virtual desktops to ensure high availability?

Scenario:

CGE decided to virtualize its infrastructure workloads and provide a virtual solution to all end users. The infrastructure workloads include Delivery Controllers, StoreFront servers, License Servers, and Microsoft SQL Servers for databases.

How should the resource pools be designed to host the infrastructure workloads and virtual desktops to ensure high availability?
A . Separate the workloads by roles and group them as a XenServer resource pool to ensure easier management, fewer workload conflicts, and support for disaster recovery. Each XenServer resource pool should comprise a maximum of eight XenServer hosts. A storage repository needs to be implemented for central storage of virtual disks, as well as for XenMotion, high availability, and backup for disaster recovery purposes.
B . Separate the workloads by roles and group them as a XenServer resource pool to reflect the OU structure of Active Directory. Each XenServer resource pool should comprise a maximum of 24 XenServer hosts. A storage repository needs to be implemented for central storage of virtual disks, as well as for XenMotion, high availability, and backup for disaster recovery purposes.
C . Separate the workloads by roles and group them as a XenServer resource pool. Each XenServer resource pool should comprise a maximum of 16 XenServer hosts. Multiple storage repositories need to be implemented for central storage of virtual disks, as well as for XenMotion and high availability between resource pools and backup for disaster recovery purposes.
D . Separate the workloads by roles and group them as a XenServer resource pool to ensure that the workloads can be streamed by Provisioning Services, including XenServer. Each XenServer resource pool should comprise a maximum of 32 XenServer hosts. Multiple storage repositories need to be implemented for central storage of virtual disks, as well as for XenMotion, high availability between resource pools, and backup for disaster recovery purposes.

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Answer: A