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How should Time Machine be setup?
Authored by: kcheon on Apr 13, '11 05:05:08AM

I just tried, you don't need to exclude the sparse bundle file in TM. It seems that TM is clever enough to look at the contents and only backup the changed files in the bundle.



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How should Time Machine be setup?
Authored by: everkleer80 on Apr 14, '11 02:33:25PM
Actually it's not so much TM's cleverness as it is the cleverness of sparsebundles. Rather than being one large file like a sparseimage, a sparsebundle is actually a collection of relatively small files (one for each band of data) inside a folder that the OS displays as a file (aka a package.) When TM runs, all it sees is the sparsebundle folder and all the band files inside it; since it is only backing up files that have been modified, only the bands that have changed are backed up.

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