I have one 500 GB HDD for my photographs (digital and analog) libraries and editing documents, one 500 GB HDD with my personal video footage in an editing friendly format.
Both 500 GB HDDs get backed up to one 1 TB HDD via CarbonCopyCloner.
And that 1 TB HDD gets backed up to another 1 TB HDD via CarbonCopyCloner.
Therefore I have three copies of my important data.
TM can backup data from an external HDD, but it will not backup data from the same physical HDD it backups to, as that would be redundant and not a real backup, unless you have the habit (or people accessing your Mac) deleting your own files.
Time Machine FAQ
This is how I backup:
Yes, it will not be backed up, as far as I know.thanks to be clear, the current stuff on my external will not be backed up?
If the above turns out to be correct, meaning TM will not backup another partition on the same HDD TM backs up to, then this is not a problem.I have some pc programs and world of warcraft on my external as well, i don't want those copied into time machine.