Hi everyone, I have been using ds215j with 2 wd reds. I have been receiving logs that disk 1 kept removing anf inserting by itself although I didn't touch the nas. Yesterday, could not find disk 1 in dsm. I bought a new hgst 4tb and inserted into disk 1. But still I could not find the new hgst in disk 1. Any shifu can help? Should I bring the nas to support centre? Where is support center as I couldn't find the info. Thanks again! My ds215j is 3 year old