I've been using a D713+ 2 drive unit with WD reds for several months. Has been excellent for local backups (both wireless and ethernet at home), and for backup up of office PC over the internet using their cloudstation package. One advantage of the 713+ is that synology offers a multi-bay drive unit can be linked which runs at the same speed as the 713. The unit may be overkill, but has a faster processor than some of the more budget friendly synology units. The processor can also run Plex software if you want to do media streaming at home, and can do limited video conversion. The build is solid - metal case. Very, very pleased with it. Software (DSM manager) is probably the most user friendly NAS setup on the market.