I please need help to understand a few Azure concepts. Namely cloud services and availability sets.
We looking at setting up a RDS server on azure to allow our UK branch to use an application called Tourplan via Web access. So the idea is to run 3 machines, DC, SQL and RDS servers on its own isolated domain.
So the questions come in,
Cloud Services
Does one only place multiple servers in one cloud service when you want to load balance. So for example 3 web servers in one cloud service, then 2 SQL servers in another? On the same Vnet.
Then comes in availability sets.
I see you can only add vms to the same availability set that are part of the same cloud service. Which also suggests that you only place the same type of servers in the same cloud service and availability set.
So I guess my main question is; because we running one DC, one SQL, one RDS server. Would I place each of them into their own cloud service and availability set?
Or would I place all 3 into one cloud service, one availability set. Even though they 3 different types of servers?
Hope I made sense and thank you for your help.