Exam 1Y0-403 topic 1 question 61 discussion

Scenario: A Citrix Architect is designing a multi-data center Citrix Virtual Apps and Desktops environment that will use Citrix Provisioning (PVS) to manage Virtual
Delivery Agent (VDA) machine images. Each data center will have a separate PVS farm. During design discussions, the architect created a diagram to depict the way in which vDisk files will be replicated among PVS farms, based on the available storage for the vDisk stores.
Click the Exhibit button to view the diagram.

Overall, the customer has identified 3 objectives for the image-replication process:
✑ Administrative time required to replicate images among farms must be minimized.
✑ The process must be usable by storage administrators without PVS farm administrative permissions.
✑ Pre-existing infrastructure and processes should be used where possible.
Which method should the architect use to replicate vDisk files among data centers?