When you select a folder as the destination, anything outside of that folder is completely outside of the scope of the backup task, and will be left alone by that particular backup task. If you selected a folder as the destination for your task, then the "items at the root of the destination" refers to the items that you find in that specific folder that you selected as the destination, not the root of the whole volume. If you selected a volume named CCC Backup as the destination, then the root level refers to the root of the volume - what you see when you open that volume in the Finder (the middle pane in the screenshot above). The "root" of the destination refers to the first or top-most folder relative to your selected destination. As a result, the olduseraccount folder will be moved to the _CCC SafetyNet folder (or deleted if you have disabled the SafetyNet). The Users folder is not unique to the root of the destination (it also exists on the source), though, so its contents will be updated to match the source. With the Protect root-level items option, the Videos folder will not be moved to the _CCC SafetyNet folder because it is unique to the root level of the destination. To understand how this feature works, suppose you have these items on your source volume:Īnd you have these items on the destination volume: This option is enabled by default when CCC's SafetyNet option is enabled. If you have files and folders that are unique to the root-level on your destination volume and you want them to be left alone, yet you want to keep your backup "clean", use the Protect root-level items option. If you would like to rotate a pair of backup disks that are encrypted, we recommend using two separate tasks for that purpose one for each encrypted destination. CCC must have a unique identifier of the destination volume in order to unlock that volume, and CCC will only retain that information about one destination volume for a particular task. Note: If your rotating destination volumes are encrypted, CCC will only be able to unlock and mount the original encrypted volume selected as the destination for your backup task. CCC always uses the name and UUID to positively identify the source volume. Note: This setting is only applicable to the destination volume. This option is also disabled if the originally-selected destination device is not attached. Network volumes and some third-party filesystems, for example, do not have volume UUIDs. This option is automatically disabled when the destination volume does not have a UUID. When deselecting this option, be vigilant that you do not rename your destination volume and that you never attach another non-backup volume to your Mac that is named the same as your destination volume. To accommodate a "rotating pair of backup volumes" solution, you can uncheck this option to indicate that CCC should only use the volume name to identify the destination volume. CCC will instead claim that the UUID of one of the volumes does not match that of the originally chosen destination. For example, if you rotate between a pair of external hard drives, CCC will not backup to both of them even though they have the same name (e.g. While beneficial, this behavior can sometimes have the wrong result. By verifying both of these identifiers, there is less risk in, for example, backing up to a volume that has the same name as your usual destination but is not actually the destination. To access the advanced settings, click on the Advanced Settings button below CCC's Source selector.īy default, CCC uses the name and Universally Unique Identifier ( UUID) of your source and destination to positively identify those volumes. menu item in CCC's Help menu if the explanations below are insufficient for your particular scenario. Some of these settings involve more risk, so please use them with caution, and don't hesitate to ask questions via the Ask a question about CCC. CCC's Advanced Settings are helpful in specific situations, but are not generally required for routine use.
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