I’ve had two QNAP NAS fail on me, never again. The first failed shortly after the 3-year warranty expired. The second failed right before warranty expiration.

Thankfully I was able to RMA to get my data back (proprietary RAID), and while waiting on RMA to return, built a custom TrueNAS server I can service all parts on myself for around the same cost of a new NAS. Sold the RMA unit on eBay to recoup some cost as well. All I ever ran on those units was Plex and Samba\NFS file shares. Never again.