Carbon copy cloner documentation11/30/2023 ![]() When CCC has finished copying the file successfully, CCC deletes (or moves to the SafetyNet) the older version on the destination, then renames the updated file to the correct filename.īecause CCC uses this special procedure, the destination volume must have, at minimum, enough free space to accommodate all of the data that will be backed up plus enough room to accommodate a temporary copy of the largest file on the source volume. If a file has changed since the last backup, it will be copied to the destination using a temporary filename, e.g.filename.XXXXXX. To prevent overwriting a good backup file with a corrupted file on the source, CCC uses a special file copying procedure called an atomic copy. Why does CCC report that the destination is full when it appears to have enough room for newer files? If you selected the free space option, consider checking the Auto adjust checkbox so CCC can manage this value for you automatically.based on free space available on the destination, age of the archives, or size of the archives. In the Before Copying Files section, indicate how CCC should prune the SafetyNet folder, e.g.To change CCC's SafetyNet pruning settings, select your task in CCC's main application window, then do the following: ![]() If you use a Windows virtual container that is 80GB on a daily basis, for example, the nominal amount of data copied during your daily backup task will be at least 80GB, so you will have to accommodate that with your pruning settings. Especially if you modify large files on a regular basis, the nominal amount of data copied each time could be fairly high. So if CCC ordinarily copies 9GB of data, maybe with a spike to 14GB every once in a while, you should configure your pruning settings to accommodate that maximum value (e.g. right after pruning is complete) as you ordinarily see copied during a backup task. In general, you should have as much space available at the beginning of the backup task (e.g. ![]() The amount of free space required on your destination depends on the size of files that you normally edit during the day. If you are not using CCC's default SafetyNet settings and you're running into a "destination is full" error, then you may need to apply a more liberal pruning limit in Advanced Settings. CCC will increase that limit automatically as necessary. By default, CCC starts with a SafetyNet pruning limit that will establish 25GB of free space on the destination at the beginning of each backup task. ![]()
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