I know there are a lot of threads here, I did read the most and followed the hints and instructions, but Emby keeps waking my DS223j up from hibernation, sometimes 4 minutes aber the system went to sleep. I disabled all possible logging options, deleted the portmapping plugin, deactivated the DNLA plugin, have no scheduled tasks. With deactivated Emby server the system sleeps without any interruptions, so the problem is definitely caused by Emby. Here is an example of waking 4 minutes after fall