Summary: Got this little marvel for Christmas last year and I love it. Put a seagate 2tb and a WD green 2 tb and had no problems with either. I mainly use it for a DLNA server to watch movies all over the house from other computers, Xbox 360 and LaCie LACinema mini and it works like a charm even with multiple (4) simultaneous viewings. Configured the FTP server to use from outside and it works well too, although a bit complicated to configure.
Pros: Very cheap when on special. Supports 3 TB, pretty easy to use. Works well with all DLNA devices (mine anyways), can be modified with custom software (didnt use it)
Cons: Very long to transfer files to it. Does not restart after power failure.
Summary: For sure must have! Easy to use, supports large hard drives and has another useful features which I don't use for now. Maybe later. All my pc's at home are able to get shared files from one place.
Pros: Amazing thing, keep all my backups and other data which I need in a safe place. 2 hdds in RAID 1 and I'm sure everything is saved.
Cons: Now it is cheaper then I bought it... I'm envying :)
Summary: This is a nice unit. It isn't the fastest you can get, but at this price it CANNOT be beat. I recommend it :D The only downfall is the "add-on" software. It really is not worth using at all. One upside is that you can run some other software from the internet and turn the NAS into a bittorrent download device, which uses less energy than having a computer on all the time.
Summary: I have this unit sitting quietly behind my sofa. Setup is a snap, just slap a few drives in and use the web brower to configure and format the drives however you prefer. After that just map a drive to computer and use like any folder. I was able to install fun_plug and configure a webserver that runs great for free! It's basically a little linux box sitting on your network doing whatever you want it too. I using in conjunction with boxee box to stream video to the tv.
Pros: - easy to setup, - 3TB drives, - raid0, raid1, - highly configuable linux kernal
Summary: There are fancier NAS enclosures around, but for the money, it's hard to beat the D-Link DNS line. In my rough tests, the DNS-325 came up about 2-3 times faster than the previous DNS-323, mainly courtesy of its faster processor. Drives from the DNS-323 popped right in and worked. I'm still waiting for the new firmware that will add support for 3TB drives, but it's already available in beta form (Oct. 2011), so I'm not worried.
Pros: reliable, inexpensive, standardized, third-party app support
Cons: could still be faster, 4 bays would be nicer