Earlier, I wrote about The State of Backup and Cloning Tools under Mac OS X, where I made the point that copying files on Mac OS X is not trivial because of the metadata associated with files.
I analyzed a variety of file copying engines, most of them command-line tools, and demonstrated how they fare in preserving file metadata.
In this article, I will investigate commonly used GUI backup/cloning tools for Mac OS X. The tools vary widely with respect to their feature set; the features are irrelevant here. I will concentrate purely on the underlying functionality of copying files. A backup tool needs to be able to copy files faithfully for a successful restore in case desaster has struck. The surprising conclusion of my investigation is that almost all Macintosh Backup tools fail at their most basic task, the faithful copying of files.