I have 2 Macs:
- MacBook Air (13-inch, Early 2015), 128 GB
- MacBook Pro (15-inch, Early 2009), 512 GB
Both of them make backups to the same Time Machine (set up on a local NAS).
My issue is that MacBook Air generates large backups almost every time it connects to Time Machine - by "large" I mean over 1 GB, often several GB.
This seems unusual to me because, to my knowledge, I don't generate large files or large number of changes on it - I use it for general office work: typically email, calendar, some work with MS Office (Word, PowerPoint, Excel), browsing.
The other Mac (MBP) is used for similar tasks, maybe a little less intensively and it backs up more frequently (typically every day vs. every couple of days) but it generates significantly smaller backups, at least by order of magnitude.
The other difference between those 2 Macs that may play a role is the macOS, but both of them have highest version of the system available for given hardware.
How I can reduce the size of backups generated by my MacBook Air? If this is more or less normal behavior, please let me know as well.