Hello Plexers 
I was wondering if anyone have any experience with this dual harddrive backups without RAID? Do I need 2x 10tb seperate external usb drives or do I need to merge the 2 drives into 1 20TB drive maybe?
I would love if I could somehow just plug in the WD My Book Duo and it would sync both drives to both drives seperately. But I assume I need to either merge the drives or need some kind of program with special tasking to do so.
Any help would be greatly appreciated!
Thank you.