If you're looking for a NAS with room for plenty of disks that's also fast and user-friendly, then the new Synology DS-1512+ and DS-1812+ are two models that should be on your wish list. They come equipped with the very comprehensive DSM 4.0 firmware, with space for either five or eight hard disks. You do have to reach pretty deep into your wallet for these, so Hardware.Info tested both models to find out if they're worth the money and how they compare to the competition.
The Synology DS-1512+ (top) and the DS-1812+ (bottom).
The DS-1512+ and DS-1812+ NAS devices are related to the DS-412+, but have room for five or eight disks. The DS-1512+ and DS-1812+ look a lot like each other, the latter actually looks an elongated version of the five-bay model. There's nothing wrong with the design, but it's a shame that the hard disk trays are entirely made out of plastic and that the trays can't be locked. There also isn't a display, for such a feature you need to look for products by Thecus or QNAP. We also would have liked to have a USB 3.0 port on the front.