Hi @susmithakatreddy-6036,
We recommend you to build a new farm if you want to migrate DB servers into a new domain.
- Build a Farm in new domain.
- Backup, restore and mount service application databases first.
- Move one content database at a time and run PowerShell script to update user name from domain1\username to domain2\UserName. Set the database in original farm to read only to avoid any updates.
- Repeat step 3 for all content databases.
If an Answer is helpful, please click "Accept Answer" and upvote it.
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.