Synology DiskStation DS412+ 4-bay All-in-1 NAS Server for SMB Users Review
 

The DiskStation DS412+ is another high performance NAS from Synology which allows a total of 4 HDDs/SSDs to be installed for enough storage space and are cooled properly with the two included 92mm fans, which are also silent during normal operation. On a single LAN connection, the unit maxes out the read/write transfer speeds and the “beast” is really unleashed when used in enterprise environments, with the “Link Aggregation” feature enabled.

http://www.madshrimps.be/articles/article/1000277/