Does the Time Capule support Time Machine backups from multiple macs out of the box?


Yes. Each Mac get's it's own sparse bundle disk image.

  • /me acting dumb. What's a sparse bundle disk image? – Stu Wilson Mar 31 '12 at 10:08
  • @StuWilson It's an automatically expanding disk image which is stored and updated in little "fragments". That way only updated fragments have to be backed up and not the whole image. Because it's automatically expanding, the image takes up only little space when created - it expands as files are added. – gentmatt Mar 31 '12 at 10:13
  • @gentmatt - If "a little space" is ~20 GB, then you are correct. The initial backup will be the size of a complete install of OS X. – Fake Name Mar 31 '12 at 11:16
  • If you create your own new sparse bundle disk image using Disk Utility, you will see that it's not that big. E.g. I've created a 1 TB sparse bundle with an initial size of less than 1GB. That's less than 0.1% of the maximum size which the bundle can hold. – gentmatt Mar 31 '12 at 11:27

And to support gentmatt's answer, here is the official documentation of Apple:

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