My new rMBP confuse me more every day (new to Mac). I am using Time Machine on a 4TB Seagate USB 3.0 drive. My first drive seemed to have a issues causing a serious slow down on my machine. I replaced that drive, fresh format and re-set up Time machine. After a couple of days I had what I assume is the normal file structure for a Time Machine drive. E.g. MacBook --> Macintosh HD --> then the list of backups, that changed from multiple backups per day to just one a day as time passed. I tried CCC (1 month trail) last night and used the Time Machine drive. The message this morning was that the clone was successful. But, I don't know what to look at/for and on my Time Machine drive the previous TM file structure is gone. What I do see a file structure that appears to be the same as looking under the "Macintosh HD" link on the sidebar. Clicking between the Mac HD and TM sidebar links I do see that TM link has an new folder "Backups.backupdb" that appears to have my TM backups. although the appear to be labeled differently. Note, I am also using Crashplan's service. So, does a "clone" backup appear identical to the original drive's file structure? Or should is it a single file/folder? Is what happened to the TM structure normal? Are the two compatible? Should I be using a different drive for the CCC clone? I'm thinking maybe an additional drive (portable) and attempting the CCC's into separate folders by date. Most of the answers I found on this forum seemed to be from early 2013 or 2012. The best I found with most things I have searched for here, is that it seems that the latest version of Mavericks is, although similar to earlier OS versions, there are quite a few differences.