No. You can add external hard drives for network access but Time Machine will only backup to one single drive and will not combo drives for storage space.
If one is backing up multiple computers, can one back up one computer to the TC drive and one to the external?
Yes, been doing that for ~ 6 months.If one is backing up multiple computers, can one back up one computer to the TC drive and one to the external?
No hacking required, btw.
Well, you can backup to the internat drive and external drive from different macs. That's not a surprise you just choose the target drive when you turn on time machine. What I want is to combine the two drives into one central time machine volume. Guess not.