User manual

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3. Click "Yes".
Backup/Restore
The domain controller status can be backed up or restored using the backup/restore function. Only the
first domain controller needs to be backed up. In an AD environment where more than one domain
controller presents, there are some restrictions and limitations associated with the restore procedures.
Please check the restore function carefully.
Backing up domain controllers
To back up the domain controller status, follow the steps below:
1. Go to "Control Panel", Privilege Settings" > "Domain Controller" > "Backup/Restore tab"
2. Check "Back up Database" and set the backup frequency, starting time, destination folder and
backup options (choose to overwrite existing backup file or create a new file.)
3. Click "Apply"
Restoring domain controllers
Please note that the current settings, including users, groups and domain controller settings, will be
overwritten and all changes made since the last backup will be lost. So, please be specially careful
when you restore domain controllers.
To restore the domain controller in a single domain controller environment, follow the steps below:
1. Go to "Control Panel", Privilege Settings" > "Domain Controller" > "Backup/Restore tab" > scroll
down to the "Restore ADDC Database" section.
2. Click "Browse" and select the backup file.
3. Click "Import".
If the domain controller you try to restore is in an environment with more than one domain controllers,
do not restore from the backup, as this will corrupt the domain controller database. Simply add the
NAS back as a domain controller, and it will synchronize with the existing domain controller. If no other
domain controllers are online, restore only the first domain controller, and join the other NAS servers
as the domain controller back. To restore a domain to a previous state with multiple domain controllers,
first disable the domain controller feature on all NAS servers, restore only the first domain controller,
and join the other NAS servers as domain controller back.