Can anyone please suggest me which AD/DC should I repoint the Exchange Server for the best practice ?
Because my Exchange Server is now in the remote Data Center while my Office building only got one small DC/GC that will be decommisioned and replaced with small VMs to server as DHCP and DNS server only.
Should I point the AD/DC in the new Data Center or build another one in the existing Office building where all of the workstations resides ?
There is just one AD domain with 3 different AD sites:
My Office & The existing Production Exchange Server stacks are all in Office1-AD-Site
My Production Servers are all in Prod-AD-Site
My DR Servers are all in DR-AD-Site