Stick to the defaults for Database, Log files, and SYSVOL unless you have a specific storage policy.
Now that the new server is a DC, change its Preferred DNS to 127.0.0.1 (itself) and set the Alternate DNS to your first DC. Pro-Tip: The "Forgotten Step" Stick to the defaults for Database, Log files,
Ensure the new server’s time matches the existing DC. Active Directory hates time discrepancies (it’s a Kerberos thing). Phase 2: Installing the Infrastructure Open Server Manager and click Add roles and features . Stick to the defaults for Database
Choose a strong password and store it in your vault. You’ll only need this if AD breaks and you need to perform "surgery" in Safe Mode. Stick to the defaults for Database, Log files,
Before you touch the AD DS role, your new server needs a solid foundation.