Answer :
- A standard connection server must be installed for the licensing and ADLDS database.
- The name of Replica Server should be different.
- Replica server is required to be member of AD domain.
Explanation :
A replica server is a standard Horizon Connection Server instance by a different name. A standard connection server must be installed for the licensing and establishment of an AD Lightweight Directory Service (AD LDS) database, but the replica and standard connection servers are functionally identical. Similar to a standard connection server, a replica supports only a single network interface and is required to be a member of an AD domain.