Note: When your virtual machine is paused, snapshot can be created neither manually nor automatically.
To enable the SmartGuard functionality, select the Enable SmartGuard option at the top of the SmartGuard pane.
If you want to know when it is time to make the next snapshot and to be able to reject the snapshot creation, enable the Notify me before snapshot creation option.
Setting the Time Interval
Set how often snapshots should be made in the Take a snapshot every field. You can set from one hour to 48 hours.
If the time interval is less than 24 hours, SmartGuard will allow you to restore the latest hourly, daily and weekly snapshot. If the time interval is more than 24 hours, you will be able to restore the latest daily, weekly and monthly snapshot.
To manage the snapshots and restore any of them, use Snapshot Manager.
Restricting the Snapshots Number
Use the Number of snapshots to keep field to set the maximum number of snapshots that can be stored on your Mac. The maximum available value is 100 snapshots. As soon as Snapshots Manager reaches the limit for snapshots and needs to make a new one over limit, it deletes the oldest snapshot.
If you want to prevent Virtual Machine Configuration from further unauthorized changes, click the Lock icon at the bottom of the window. The next time someone wants to change the settings on any pane of Virtual Machine Configuration, an administrator's password will be required.