Summary: Who am I to argue with over 200 other reviews? Also, I'm not an expert user, so I can only comment on my own experiences. The DNS-323 has been available for nearly four years years, so you have to assume that at least some people have found it to be useful.
Summary: I bought this model because of the USB printer port. The USB port requires that you run special software on each PC that will access the USB device. Didn't work. Software was lame. Like I want one more piece of software running on my computer.
Summary: Added 06-16-2013: Get new life from the DNS-323 with the third party ALT-F firmware. Since D-link ended support for this NAS, it's days have been numbered. But now there's new life for the DNS-323 with ALT-F firmware (google it).
Be careful what hard drives you buy to use with this unit!!!
Amazon Customer "Rich", Amazon
19 May 2010
Summary: Be aware that D-Link doesn't support any WD drives implementing "Advanced Formatting" technology. This includes all drives in the WD*EAR* product line. See [...] regarding the issue and [...] for a list of drives compatible with the DNS-323.
Summary: One of the few of these type of items available on the market. I bought it with great trepidation after reading all the reviews. I had received some free drives from Newegg (Seagate) and needed to house them. This was a no brainer set up.
Summary: I purchased this unit about a month ago from Amazon. The delivery was prompt and the unit arrived with no issues. I've purchased many things this year from Amazon and continue to be a loyal customer. I installed two 1Gb drives in this unit.
Summary: I bought this product as a power/space saving alternative to a Windows Home Server. My main purpose for a NAS was to function as an UPnP server for my PS3 and and Itunes server for my pc's. After reading lots of reviews for other NAS enclosures this was the clear winner.
Summary: I originally wanted this product as a RAID NAS to backup my music and photos. Then I got a PS3 and thought it'd be a great bonus to use the media server component. Here's where it fares: NAS: This is great as a RAID NAS. I didn't want a whole computer running to act as a file sharing device.
Summary: I bought this mainly as a file sharing device, but was pleasantly surprised with the iTunes server and the print server that came built-in. I've got computers with Windows Vista, Windows XP Pro, iMac and mac mini (both running Leopard), and all can access files and iTunes with no problems.