Set up a tenant read-only scale-out system.
You must have:
A cloud server created for every scale-out database copy that you add to your read-only scale-out system. The major and minor version of each cloud server must match the cloud server version of the primary database.
The AlterTenantMirroring privilege.
The database cannot be an autostart database.
Read-only scale-out involves creating numerous read-only scale-out database copies of a tenant mirroring system or read-write database.
A cloud server can run only one copy of a specific tenant database.
A read-only scale-out database copy is created. As a result, you now have a tenant read-only scale-out system.