Large Backups with Time Machine
I've noticed very recently that Time Machine is producing regular and abnormally large backups, so over the Christmas period I recreated my Time Machine backup set from scratch (just in case something had corrupted along the way) but in the space of one week of setting up this new backup plan i've had another three large (70Gb+) backups already. My initial backup is just over 130Gb, so something is clearly not right.
BackupLoupe
In an attempt to diagnose exactly what was going on with Time Machine i chose to download BackupLoupe for Mac It's a really nice piece of software and only €1.49 (although you do get a full trial before buying). Upon launching for the first time it scanned my Time Capsule backups that had taken place previously, giving me a clear idea of the size of each one, to which i can drill through to get a good picture of what's causing these large backups each time.
BackupLoupe states the larger one's that occur every few days are down to my iTunes folder, particularly movies and tv shows. This still doesn't explain to me why Time Machine decides to take, what seems like, full backups of this folder, particularly seeing that the files within them haven't changed for a while but it's a first step to diagnosing exactly what's going on and how Time Machine makes it's decisions.
Hopefully i'll get a bit closer to an answer in the coming weeks.
