Good Afternoon Adial,
actually you do not have to manually add in the computer. When installing a UCS to be used as Backup, the backup role is selected during the installation, as seen in the documentation below:
When the installation is complete, and the domain is joined, the computer is automatically added, in the Master DC.
Another way to do it through the UMC :
- login into your Master DC per web interface:
- Go to devices, and select computers,
- Choose the ADD button
- Then make selections as shown in the screen below:
After choosing next, you enter the name of your DC (i.e then name of the backup server ) choose default as network, and enter the MAC address and IP.
The Computer is then created as a backup DC