is there any possibilty of problems, due to a 2nd time installation of the schema extension for a lync server, in an active directory childdomain of a forest? Replication overhead would not be that relevant...
Have searched, but not found any evidence of duing this a second time...
Cheers, Michael
The AD schema is basically a list of all the types of objects that can exist in an AD instance, as well as the properties such objects can have. It's basically a blueprint. Installing a schema extension/update merely adds object types and properties to the list, so running such an update multiple times isn't really much of a hassle.
The worst that can happen is that the update process detects that the changes it wanted to make have already been made, and it may not run for that reason.
