I have 2 physical sites
2 DC in 1 site 1 GC
1 DC in 1 site 1GC
i need replication to be very quick, would i modify the DEFAULTIPSITELINK to do this? maybe set it to every 15 minutes? is there a downfall?
I also want each server to be able to replicate to and from each other do i need to create additional NTDS settings? what should the schedule be for all of them?