I originally looked around at a number of drives but my primary objective was to find one that included a UPnP server. At the time, there were only a handful available and the Maxtor SSII seemed to be the best value among them.
I haven't had any issues with the network connectivity - I have mapped drives to it and they are always present whenever I turn on any of my PCs. I use MS Synctoy2 for mirroring my music/photos between drives which seems to work quite well. The drive is reasonably fast. The print server is so SLOW, I gave up on it and connected my Pixma iP5000 back to my main PC. Would have been nice not to have to turn on the PC to print stuff from the notebook!
The UPnP experience has been a little dissappointing.
After ripping about 400CDs onto the drive as VBR WMA files, I turned on the PS3 and began to play. The PS3 found the drive fine and allowed me to display a list of files. But every file I tried to play came up as unsupported data. Note that these files play fine from a USB flash or hard drive plugged into the PS3.
After much mucking about and wasting of time, I found the ONLY file types the MSSII presented correctly via UPnP were MP3 audio files and basic MPEG2 video files (like on a DVD or converted DTV transport stream). So now if I want to use the MSS for streaming, I have to convert music to MP3 (my least favourite compression format but thank god for dBPowerAmp) and video to standard MPEG2 (which gives me files around 4 x the size they could be if AVCHD, WMV or DivX would stream properly!).
Once I was reasonably happy with the way I had it set up, something went wrong and the media server stopped working. I got a replacement from Seagate without too much trouble (once they'd given up trying to work out what was wrong) and it is working as well as the first one ever did (apart from being much noisier - think it's the coolign fan rather than the drive).
I'm considering scrapping the NAS streaming concept and just connecting a big USB drive to the PS3 to store my media... It will be a little harder to manage but at least I'll be able to play all the formats the PS3 now supports.
Some other gripes about the UPnP server - the directory presentation is slow. It isn't sorted (or able to be sorted) but this may be a client function. Playlists aren't supported. There are minimal content grouping options (compared to streaming from Windows Media Player or other apps on a PC). In all, it seems to be rather simplistic.
As a network drive for backup and file access from PCs it has been fine.
Hope this helps ppl with their decision to buy...
Craig