Exam 1Y0-402 topic 1 question 85 discussion

Scenario: A Citrix Architect needs to manage the disaster recovery process for a XenApp and XenDesktop environment. The environment currently consists of an active datacenter which is typically accessed by used and a disaster recovery (DR) datacenter which would be used in the event that a disaster impacts the primary datacenter. The overall environment has been designed to actively replicate user data and application data from the primary datacenter recovery datacenter using Microsoft DFS-R. Management has made it a proirity to minimize the loss of data when failing over between datacenters.
Due to an earthquake, the primary datacenter suffers a major outage that affects multiple components. Management has decided to fail over the DR datacenter, and the architect has blocked access to the primary datacenter to prevent new attempts to connect to the XenApp and XenDesktop Site there.
Which three actions must the architect perform to meet the company priorities before enabling access to the DR datacenter? (Choose three.)