Personal NAS is so hot right now it burns. Linksys is the latest brand on the bandwagon with its dual drive NAS200 unit, offering much the same feature set as other NAS devices, yet with a few flaws that are hard to overlook.
Presented in the now typical perforated plastic Linksys design, the NAS200 is not unattractive, looking somewhat like a miniaturised squat stereo. It's quite light, which unfortunately imparts a sense of cheapness. This is confirmed when opening the drive bays at the rear and the drive releases are discovered to be tags, akin to those found on clothing with washing instructions, that are tugged on to remove the drive and tend to get in the way when trying to insert one.
Two USB ports are available above this for further external storage, and next to that the biggest downfall of the device -- a 100Mbit Ethernet connection. In an age where everything is going gigabit Ethernet, this stands out as a very poor choice on Linksys's behalf.
LEDs dot the front to tell of drive activity/status, power, Ethernet and USB status. A single button is on the front for instant backup through NTI's Shadow software, which is an easy to use program, including the option to save multiple versions of backed up files. There doesn't appear to be an option to do a differential backup.
The NAS200 supports separate drives, JBOD, RAID 1 and RAID 0 configurations, which can be managed through a client side application or through a Web interface. The Web UI is unattractive and not particularly intuitive, and requires you to login every time you flip between file management and admin tasks.
This offers user level access control, but isn't as flexible as the D-Link DNS323 in that no group level control is offered. You can access the device through the Internet as well, so long as you correctly port forward your router to the device, and the device can be configured for Dynamic DNS services through TZO, although expect this to attract an extra cost.