What is the difference between Primary site and Secondary site?
Primary Site :
* The primary site can access with Microsoft SQL Database.
* It can administer through the Configuration Manager console.
* The primary site can be used as a child of another primary site, or it can have its own child sites.
* Clients can assign the sites directly.
Secondary Site :
* The secondary can't access to the Microsoft SQL Database.
* It can only administer through the Primary Site.
* In this secondary site, it cannot be used as a child site of its own.
* Clients can't assign the site directly.
