I have a single Sharepoint instance that is growing with the number of sites. Due to a software licnese we have for a prodcut on that SP Instance we are not allowed more than 5 sites.
We are already working on building a second SP grouping of 4 servers(front end and backend servers) for a Portal project for the company. So in summary we have two SP instances, I am not sure if this is referred to as Farms or simply groups so excuse the terminology
What i want ot do is create another SP instance so we would have the following:
1. 1 SP Server with 5 sites
2. 1 SP server with more than 5 sites
3. 4-5 server grouping for our Portal project
Can we have seamless authentication between these instances or will the users be forced to login to each grouping?