[Leica] Software question

[lluisripollphotography]

I’m working with a iMac, I think it would be very interesting if it was available an app allowing to run Time Machine Back Ups sharing the information with two or more external discs, in a predetermined manner of the user (the folders A, B, C -> Disc 1, the Folders F, G, H… -> Disc 2). Any idea if this exists? I have asked an Apple dealer and said me that this doesn’t exist…

Thanks in advance
Lluis