Upgrade drvies on EX2

Hi, was thinking of buying a MyCloud EX2, was wondering how you upgrade the drives later. Say I get 2x 2TB drives and mirror them, and I want to put 4TB drives later. I assume I can break the mirror, install one of the new drives and rebuild the raid, then replace the other old drive. Or would I need to back up the old drive, install the new ones and import the data over USB from an enclosure? Thanks!

This subforum (My Cloud) is primarily for discussing the single bay My Cloud units. You may want to post in the dedicated My Cloud EX2 subforum where people more knowledgeable about the EX2 can help.

https://community.wd.com/c/network-attached-storage/wd-my-cloud-ex2

Ok, thanks