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You are right.
Sorry, I didn't understand that from the way the hint was worded. Yes, that's a new ability. You definitely could not do that before Lion. I can see this being somewhat useful on portable macs which can be away from their backup drives for extended periods of time but I don't see why you'd ever want to use TM in such a way on a desktop Mac. I really can't see a scenario where that would make sense. I can certainly see why this ability is turned off by default on desktop macs.
You are right.
Yeah, I could see this being of limited utility on a desktop Mac, and using up way too much space on your boot drive in any case. I could see it being most useful if you were working on a project and wanted to implement your own version control system by excluding all folders except for your project's folders.
You are right.
It can take up a lot of space but it will not happen immediately. As the files are being modified, the original is backed up once for each snapshot that’s taken. It’s not like a full Time Machine backup where it actively copies your boot drive. It seems to be using fsevents to monitor changes and moves the originals into /.MobileBackups sorted out by the time the snapshot was taken.
You are right. -- sometimes
There are certainly instances where this feature would have served my clients under Snow Leopard. |
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