Very often, it will show the error, “Your connection to the server is not fast enough to stream this video. Check your Network.“.
Western Digital (WD) produces the best hard drives and Synology produces the best prosumer Network Attached Storage (NAS). I have two NAS at home, both are from Synology and using WD hard drives.
My Synology DiskStation DS210j is on 2x WD Green 1TB running 24/7 since 2010 and my Synology DiskStation DS413j is on 4x WD Red 1TB running 24/7 since 2013. After all these years, both NAS and their hard drives did not give me a single problem at all.