As feature complete a NAS as you will find.
DLNA configuration is handled through Twonky's UI, which is a letdown.
OUR FAVORITE NAS GETS BETTER, BUT REMAINS PRICEY
When the previous version of a product holds a spot in our Best of the Best hardware rankings (see our review of the QNAP TS-459 ), it's only fair to have some high expectations, and fortunately, QNAP meets them with its TS-459 Pro II. The TS-459 Pro II ships with power and Ethernet cables and includes NetBak Replicator software to easily manage backups to the device.
Some aspects of the TS-459 Pro II hardware are comparable to the competition, and in other respects, it's just head and shoulders above the rest. A 1.8GHz dual-core Atom powers the TS-459 Pro II, and 1GB of DDR3 RAM comes preinstalled, though you can upgrade to 3GB yourself. The front of the NAS features four individually lockable drive trays that are mounted vertically. The LCD provides quick access to important information and can be used to handle some minor configuration.
QNAP offers more connectivity options than most mortals will know what to do with. The dual Ethernet ports are pretty standard for these devices, but QNAP also tosses in four USB 2.0, two USB 3.0, and two eSATA ports. QNAP also gets a leg up on the competition by providing support for SATA3 drives internally, giving it lots of potential when paired with high-performance drives. In addition to all of the standard RAID levels, QNAP also supports a RAID 5+Spare configuration for folks with a phobia about data loss.
On the software side of things, QNAP shows similar attentiveness. The TS-459 Pro II offers three distinct web console interfaces for administration, media playback (Multimedia Station), and file browsing. QNAP's web UI isn't as cutting-edge as what Synology offers, but that doesn't make it any less usable. From an administration perspective, all of the key features and capabilities are easily accessed. The Multimedia Station is especially handy, as the system indexes your media and gives you very usable methods of viewing your pictures or listening to your music away from home. DLNA and iTunes server support are both included with the TS-459 Pro II, though DLNA is handled with a Twonky server plugin.
It might be pricey, but the TS-459 Pro II covers all bases.
$950 (enclosure only), www.qnap.com