If you're in the market for a dual-bay network storage device, Synology's DiskStation DS712+ server will make the best investment.
Priced at around $500 with no storage included, the server is not cheap, but it's definitely worth every penny for those who want (and are able) to get the most out of home or small-business networking.
Like other NAS servers from Synology, the DS712+ runs a Linux-based operating system, called DiskStation Manager, and offers an incredible number of features for both home and business use. Most, if not all, of its features are very well thought out and comprehensive.
The self-download feature, called Download Station, for example, offers the capability to download from any FTP or HTTP site, including those that require authentication. It's also the best BitTorrent client I've seen, even compared with Windows-based software clients. The server also registered excellent data throughput performance, besting all dual-bay servers I've reviewed by a large margin.
The DS712+ is an upgrade to the DS710+ that was released more than a year ago. These two dual-bay servers share an unusual feature: the ability to expand to up to seven bays when coupled with Synology's DX510 expansion unit. This means, at the top configuration with 3TB hard drives, the server can offer 21TB of storage space.
For more information on this server and why it earned CNET's Editors' Choice Award, check out my full review of the Synology DS712+.