interesting setup .. however i have one problem with this setup (as with most htpc-based dvr setups) that i'm trying to solve myself but haven't been able to do so
i really want to setup a dvr for myself .. but i really want it to be to record hdtv channels also .. currently my setup doesn't have a cable box but i get local HD channels from my cable directly within my tv .. if this is all that i could record .. it would be a start .. but ideally i would also want to be able to record non-premium (TNT, ESPN, etc) cable channels too
furthermore, if the dvr software could also directly encode to a better codec to optimize space usage .. that would be great too
i think 2gb for a 720p 1 hour show would be good .. i don't mind getting a "more powerful" cpu to handle this if it could be done on the fly (w/ time-shifting capabilities too)
as you can see i have LOTS of demands for my htpc dvr solution .. hence why i haven't been able to build one yet