Zlon

 Disk-to-disk copying is mostly used to create a duplicate of the physical device. Make sure that target is of the same size or larger than a source. If this not the case, a subtle data corruption may occur. Zlon keeps track of the device sizes and will emit a warning message should the problem be detected.
Creating a direct duplicate of the logical drive is possible but not recommended. If you go for this option, make sure the target has the same filesystem as the source. Also, if the source is smaller than the target, certain weirdness may be evident if you cross check Disk Management volume size/free space readings with these of Windows Explorer.