My synology rackstation was working fine for years, I have about 3T of data on it and I mistakenly renamed the master folder that contained bulk of the data, which triggered a cascade of upload/download. I found out what I did in within 5 minutes and immediately reverted the rename, which obviously triggered another cascade of upload/download? Once the dust was settled, I tried to change the folder to sync and now my rackstation only uploads but fails to download. Not even a simple .txt file... nothing, but if I save a big sized file/folder in the NAS, it will upload to dropbox, no problem.
