I was looking at Synology and QNAP NAS and was wondering if anyone has experience with these units failing. I'm not concerned so much about the reliability of these. Rather what happens if you have a mainboard failure? Can you just take out your drives and pop them into a replacement unit keeping your RAID and data intact? Would you lose everything and have to make new backups if it was being used as a network backup or restore from backups if being used as a file server? What happens if the model stops being made? Can you place the drives into a newer model?