Adding a new Domain Controller Set
I am looking to get some information on adding a New Domain Controller set to an 800xA 5.1 system without hugely interrupting the plant visibility. Currently the AS sever is acting as a combined Domain and AS server, we are planning to put a new DC pair to remove the DC functions from the AS server.
Is this possible, does any one have any previous experience of doing this on a live running plant, if so could you please share the steps followed.
Voted best answer
Load your new servers with the OS
Join them to the domain
run DCPROMO on each one and let them become DC's
you will likely need to redirect the current computers to the new ones if you move the DNS role, assuming its on the DC you are trying to demote.
once the new DC's are running, and your computers in the system are getting DNS etc from the new servers you can demote the current DC.
Adding removing DC's should not impact your live running plant at all - just identify where DNS is being done!
just a thought - you are on SV5.1 so that is server 2008 R2; i guess you will be loading 2016 for the new DC's - so you will need to upgrade the 2008 domain. But windows will warn you this needs to be done and what to do.
I have done this upgrade step on a live system - The abb system is not affected by domain upgrades etc - as long as they find a valid domain they will run.