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[Server 2012R2/2016] Do i need to use adprep or not?
Hi, this is my first post.
I plan to upgrade a network with multiple windows server 2012R2 to windows server 2016 like this:
- First I add 2016 servers (which will then be at the 2012R2 AD level) and move functions to them.
- I make some of the 2016 servers to DC (still 2012R2 level).
- I'm demoting and phasing out 2012R2 servers that no longer have any functionality.
- When all 2012R2 servers are disconnected, I raise the AD level to 2016.
- My question is: Now that I'm going to install my first 2016 server and make it to DC, do I need to run "adprep" on it? If so, how?
Exactly what function does "adprep" have? What does it do?
Grateful for any the answers.
I plan to upgrade a network with multiple windows server 2012R2 to windows server 2016 like this:
- First I add 2016 servers (which will then be at the 2012R2 AD level) and move functions to them.
- I make some of the 2016 servers to DC (still 2012R2 level).
- I'm demoting and phasing out 2012R2 servers that no longer have any functionality.
- When all 2012R2 servers are disconnected, I raise the AD level to 2016.
- My question is: Now that I'm going to install my first 2016 server and make it to DC, do I need to run "adprep" on it? If so, how?
Exactly what function does "adprep" have? What does it do?
Grateful for any the answers.
ASKER
Thanks for the reply.
So:
- I have 4 DC servers today, all 2012R2.
- I add a new 2016 server and make it DC.
So what I don't understand is that:
Will my old 2012R2 servers:
1. Stop managing logins?
or:
2. Continue to manage logins with the 2016 AD level?
or:
3. Explode in a cloud of smoke.
So:
- I have 4 DC servers today, all 2012R2.
- I add a new 2016 server and make it DC.
So what I don't understand is that:
Will my old 2012R2 servers:
1. Stop managing logins?
or:
2. Continue to manage logins with the 2016 AD level?
or:
3. Explode in a cloud of smoke.
SOLUTION
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You do not need to run ADprep...it will be executed by Domain Promotion wizard automatically in background. (You may run if the wizard fails during adprep)
ADPrep basically adds the extra attributes to the AD Schema needed for windows 2016
ADPrep basically adds the extra attributes to the AD Schema needed for windows 2016
Adprep is used before the first 2016 machine is promoted.
A good guide is here:
https://docs.microsoft.com/en-us/windows-server/identity/ad-ds/deploy/upgrade-domain-controllers
Follow those simple steps and you’ll have no issues.