I moved my TVersity server (v0.9.11.2) to an old Mac Mini running Vista. It still reads from the TeraStation Live RAID box. Some quick comparison between MacMini Tversity and TeraStation TwonkyMedia:
* Tversity is much more versatile. It supports video transcoding via ffshow and WMP. It's able to convert QuickTime movies to MPEG2 stream on-the-fly for viewing. WMVHD and MPEG4 files are streamed directly by default.
* Tversity also supports network media. I can watch YouTube and G4tv videos from the "Internet video" channel. There is an easy way to name and organize the video URLs (e.g., xxx.yyy.zzz.
http://blah will organize the URL under xxx > yyy > zzz). By default, Tversity includes some dynamic links (e.g., Top favorite YouTube videos, Most recent YouTube videos, etc), which is nice.
* Tversity sports a web interface with search. If you are at the last second level (one level above the leaf nodes), you can use keywords to retrieve the files you want.
* OTOH, I like TwonkyMedia's snappiness. It is very quick for regular operations. For example, I can fast forward a WMVHD (VC-1) stream to 120x quickly (by pressing the ff button repeatedly). For Tversity, the UI is not that responsive. Sometimes, I can push it to 30x and it will "hang" there trying to process the frames, and then come back much later. May be if I switch to a more powerful PC, the experience would be different.
For Tversity, MP4 files can be fast forwarded more quickly than WMVHD (both no transcoding). With transcoding turned on, fast forward can still work as long as the necessary frames have been converted.
* I also like TwonkyMedia's web admin features. I can change all the settings remotely. Tversity's web interface is only for media client access.
* Finally, Tversity sometimes refuses to start. Even when started, PS3 occasionally can't see it. TwonkyMedia has been very consistent in this aspect. It always shows up almost instantaenously.
A while ago, I moved all my media to the local HDD (when I moved my PS3 to the office and switched to a 60Gb). And some are still in my USB drives. I will now move them to the TeraStation again. Will be able to see how the PS3 fare with more media.
EDIT: I made a mistake in my description of TwonkyMedia in the last post. Basically, both Tversity and TwonkyMedia will filter the files according to the XMB media icons. i.e., if I am in the "video" icon, only video files will be shown even though the music and picture folders are visible.