Based on recommendations and best practices from Microsoft, and information I found here, I compiled a FSMO placement scenario for 2 domain controllers:
| DC1 | DC2 |
| PDC Emulator RID Master Infrastructure Master | Schema Master Domain Naming Master Global Catalog |
Also, if your domain is top-level in the AD forest, configure DC1 to sync with external time sources.
To transfer roles, it is recommended to use Powershell's Move-ADDirectoryServerOperationMasterRole.
