Thanks for this.
The important stuff is on the 1tb drive and is only really the photos which are in the cloud too.
Is it possible to take 1 of the 2tb drives out of the array, leave one in the server and format that, then put the other drive in a windows machine, transfer the data back to the xpenology server then add that 2tb drive back into the server? Since the 2tb drives are in raid 1 so mirrored.
Or does it not work like that? (Forgive my ignorance here!
Thanks again!