Exam 3V0-21.21 topic 1 question 74 discussion

An architect is tasked with designing a new VMware software-defined data center (SDDC) solution for an online retail customer who has a primary and secondary data center as well as 10 distribution hubs.
The customer has provided the following business requirements to help inform the design:
✑ The solution must support the running of up to 1,000 concurrent virtual machines across the primary and secondary data center.
✑ The solution must support the running of up to 20 concurrent virtual machines in each distribution hub.
✑ The solution must support the separation of management and lines-of-business application virtual machines.
✑ All management components (including directory services, backup, automation, operations and logging) must be deployed to the primary data center.
✑ All virtual infrastructure components must have redundancy of N+1.
✑ All sites are connected to each other using a wide area network that has multiple diversely routed links.
✑ The solution should support a monthly uptime target of 99.9%.
✑ The recovery time objective (RTO) for the solution must be four hours.
✑ The recovery point objective (RPO) for the solution must be 24 hours.
Given the information from the customer, which assumption should the architect include in the design?