The Gadget: A RAID-enabled, four drive, DLNA supporting, internet streaming, Apple Time Machine supporting NAS that, while not a Windows Home Server, has tons of functionality built into the tiny box.
The Price: $434 on Amazon
The Verdict: Strong. I hate going running down the feature list in reviews, but the NS4600 has quite a big spec sheet.
• Hot-swappable 3GB/s SATA, 1.5TB per drive, up to 4 drives
• RAID 0, 1, 5, 10 support
• Gigabit Ethernet
• USB HDD and printer support
• One-touch backup
• Built-in BitTorrent and eDonkey downloads
• SMB/CIFS/AFP/NFS Network Protocols Support; Shared Storage for Windows, Unix, Linux, MAC clients
• Time Machine support
• DLNA Streaming (PS3, Xbox, DLNA TVs)
• Cellphone video/music streaming (iPhone, Nokias, PSP, Windows Mobile)
• Internet management/access
And all these features work! Streaming to the iPhone was slick (just enter in the username and password) and fast, and streaming to the Xbox 360/PS3 worked as well as any other DLNA network device. This means that if you set up the correct port forwarding options on your router to punch through your NAT, you can have access to your library of music and videos on your cellphone no matter where you are.
What's also very useful is the RAID support, which you can check our Giz Explains to see why you'd want one. In short, you're going to have all your media and documents on here, and it pays to have some sort of redundancy when (not "in case") a drive fails.