Hi - I have a DS716+11 and currently have it mirrored nightly via ShareFolder Sync to an onsite DS215j. Both are raid 1. That part works well but when I take a 4TB disk out of the 215j and put it into a USB 3.5 caddie attached to the DS716+ the DS716+ can see the HDD in External Devices but it doesn't show up in Shared Folder so I cannot access any data. Any suggestions? I am not fixed to this way of doing things so if you have a better idea I am open to it. I also have an offsite backup. I did this because I had the DS215j and thought it might be a quick fix if the DS716 went down. - Thanks