DES-3611 Question #1: Real Exam Question with Answer & Explanation

A customer has two new Dell EMC Integrated Data Protection Appliances and wants to back up to both appliances and replicate bidirectionally. The data centers are connected by a WAN link that will also be used by other mission critical applications. To prepare for replication, the customer wants to co-locate both appliances at one data center and configure replication locally to minimize the initial replication traffic. After the initial synchronization, one unit will be relocated and the network reconfigured at the disaster recovery data center. What is mandatory for this solution to be deployed?