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How can I use a domain user for Time Machine after adding my NAS to an Active Directory domain?

Last modified date: 2024-11-20

Applicable Products

HBS 3 (Hybrid Backup Sync)

Scenario

After adding the NAS to an Active Directory domain (AD domain), when attempting to perform a Time Machine backup task on a Mac as a domain user, you may encounter some issues, such as being unable to log in or receiving an error message: Time Machine couldn’t complete the backup, as shown in the following screenshot.

Solution

You can add a Time Machine destination using the tmutil command with a domain user account. To perform this task, ensure that you have administrator privileges on your Mac.

  1. Configure access settings.
    1. Go to System Settings > Privacy and Security.
    2. On the left-hand side, click Full Disk Access.
    3. On the right-hand side, click + and search for Terminal.
    4. Select Terminal.app and click Open.
    5. Select Quit & Reopen if you are prompted to quit Terminal.
  1. Search for Terminal using Spotlight and then launch the Terminal application.
  2. In the Terminal window, enter the following command to configure Time Machine with the desired credentials:
    sudo tmutil setdestination -p "smb://DOMAIN\\DOMAIN_USER@IP/FOLDER"
    • DOMAIN: Domain name
    • DOMAIN_USER: Domain user
    • IP: IP address of NAS
    • FOLDER: Backup folder
  1. Enter the password of the Mac administrator when you are prompted for a password.
  2. Enter the password of the user that you will be using for Time Machine when you are prompted for a destination password.

  3. Open System Settings, go to General, click Time Machine, and then check whether Back up automatically is enabled.

Before performing a backup task as a domain user, ensure that this domain user has permission to access the shared folder. If you have not yet configured permission settings, you can follow these steps.

  1. Log in to the NAS
  2. Go to Control Panel > Privilege > Users.
  3. From the drop-down list on the top-right corner, select Domain Users.
  4. Click Edit Shared Folder Permission in the Action column.

Tip

If you want to view the AD domain that NAS has joined, you can go to Control Panel > Privilege > Domain Security.

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