Final answer:
The untrue statements regarding VDP are that it requires a separate vCenter Server instance and that it supports backup of physical servers. VDP integrates with an existing vCenter Server and does not back up physical servers.
Step-by-step explanation:
The statement that is untrue regarding vSphere Data Protection (VDP) requirements and limitations is: A) VDP requires a separate vCenter Server instance. VDP is typically deployed as an appliance and it integrates with the existing vCenter Server; it does not require a separate vCenter Server instance.
On the other hand, VDP does support the backup of virtual machines but it does not support the backup of physical servers, making statement B) also untrue. VDP does have a maximum limit on the number of virtual machines it can back up, which addresses statement C). Lastly, statement D) is true as VDP indeed supports deduplication and compression to optimize storage utilization.
B) VDP supports backup of both virtual machines and physical servers.
VDP is a VMware backup and recovery solution that is designed to support the backup and restore of virtual machines. It is not intended to backup physical servers. Therefore, statement B is incorrect.
On the other hand, the other statements are true. A) VDP requires a separate vCenter Server instance, C) VDP has a maximum limit on the number of virtual machines it can back up, and D) VDP supports deduplication and compression to optimize storage utilization.