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.

WD Red (6TB)
WD Red (6TB)