@Riley_S Thanks for the reply. I already have a Nas and am hoping to add further redundancy/protection. The easy portability (and smaller cost) of a nas backup in the form of a smaller external drive...

this question has been answered in relation to the AX55 before. does the usb3 port support large external drives? there used to be a limit of 4tb on many of these devices, but it turned out the AX55...