Time Machine
Apple recommends disabling Time Machine when organizations use device management tools because Time Machine restores can corrupt the device profile. This happens when Utilities and Applications folders are overwritten by previous versions that may not be supported on the new device. The worst-case scenario is the device becomes completely unusable.
To maintain system integrity and functionality, Time Machine backups and Migration Assistant are not allowed on OU-managed devices for several critical reasons:
- Device Management Issues: Time Machine can disrupt device management by overwriting essential files, leading to significant functionality problems within the management system. Worst-case scenario, the new device becomes completely unusable.
- Office Conflicts: Restoring from Time Machine can cause conflicts with Microsoft Office. It may revert to an older version of Office or result in multiple versions being installed, creating confusion and compatibility issues.
- Active Directory Disruptions: Time Machine backups can compromise the the Active Directory connection. When restoring, the device may take on the old machine’s name and SID, which is no longer active, breaking the link to the Active Directory. Even if the device retains the same name, the new SID will not match the old one, leading to connectivity problems.
Time Machine Alternatives
1. Apple Share Disk
You can use the Apple Share Disk feature to transfer files. Boot the old Mac into Recovery Mode (Command + R) if using an older Mac or hold down the power key when powering on and go into Startup Options. Apple provides a support article describing this process at https://support.apple.com/lt-lt/guide/mac-help/mchlb37e8ca7/mac.
2. Mac Sharing
You can also enable Sharing via System Preferences. This leverages traditional network sharing protocols, but both computers will need to be connected to the same network. You'll need to browse your Apple Network to discover the old Mac, log in, and then transfer files.
3. Reinstall Applications
Applications purchased through the App Store can be reinstalled on the new device.