Dear members, I was just wondering how Time Machine works. I have an 1TB Time Machine harddrive. The Time Machine harddrive contains the following maps: Backups.backupdb -> Sytrus iMac -> (In here i have about 30 backup maps from january to yesterday's date) All those 30 maps are 650gb large. Let's do math: 30 x 650gb = 19.500gb = +- 19TB, that's 19 times the size of my harddrive. How is this possible?