Whats the difference between seagate ironwolf, ironwolf pro, wd red, wd red plus and wd red pro? What is shingled magnetic recording? Can I just use a regular desktop hard drive?
The DiskStation 920+ is identical to the DS720+ except it comes with more memory and 4 disk bays making it a excellent choice for use as a plex media server and more. The DiskStation 418 is the lowest cost 4 bay nas for a backup device, file server or low budget media server.
Synology DiskStation DS418 vs DS420+ vs DS920+