Aug 5, 2011, 04:58 AM
Today I noticed my system disk on my MBP was getting way too full. I ran DaisyDisk and noticed that a folder called .MobileBackups was taking up a whopping 30 GB of space. After some investigation I learned about Time Machine's local backup snapshot "feature." Here's the situation - I have a 120GB SSD as my system drive, along with my stock 500 GB hard drive in an Optibay, which has roughly 285GB devoted for Time Machine. Obviously, I'd rather have the local snapshots be stored on the TM disk, where space is not an issue. However, it seems that local backups are just that, hourly snapshots that are stored locally for when I'm "away from my external TM drive." Well, since my "external TM drive" is not external, and I'm never away from it, it makes sense to disable this. Before I do, I'd like confirmation that this won't screw me over in any way. Do Mobile Backups have anything to do with Autosave? Any other cautionary advice I should know? Thanks in advance.