I have a home network consisting of a Windows Home Server (WHS), a Windows 7-based HTPC and some laptops. The WHS stores all content (music, movies, photos etc.) and documents - just like it is supposed to do in such a setup.
The WHS is set to hibernate after 10 min. and the HTPC to sleep after 1 min and hibernate after 4 min. Also, the HTPC wakes the WHS using a WOL-tool on reboot and when coming out of sleep/hibernation. All in all the power saving setup works *flawlessly* with the only drawback of having to wait 30-40 secs for the WHS to come on-line when it resumes from hibernation - we can live with that.
On the HTPC we use Windows Media Center (WMC) to watch/record TV, play games, watch media contents stored on the WHS. All in all this works quite well. However, if we play movies stored on the WHS, the HTPC refuses to enter into any power saving mode once the playback has been halted. It doesn't matter how we halt playback: STOP, EXIT or EJECT (the latter is found in the CONTROLS-menu when right-clicking during playback). Copying the movie-files (ripped DVDs stored in VIDEO_TS format) locally to the HTPC and playing them from the HTPC's own harddisk causes no problem - the HTPC enters sleep/hibernation as it should once playback is halted.
I have tried starting the movie (locally as well as WHS stored copies) using both the MOVIES menu-item found in the main menu of WMC and also MyMovies (using client 3.15 and the latest server applet - MM database is stored on the WHS). It is the same thing: The HTPC refuses to enter power saving modes when playback is halted, if the movie is stored on the WHS.
Have anyone else experienced this problem and perhaps found a solution? I am no expert here, but it seems to me like WMC does not 'release' the network-stored movie-files properly when playback is halted causing power saving to be cancelled due to 'open' network files - but that is just my interpretation...
By the way, if I playback some of the music stored on the WHS, the HTPC also refuses to enter power saving if I press STOP. However, if I press EXIT during playback followed by BACK (so that I return to the WMC main menu) it does enter power saving.... go figure...
I haven't done any testing as such with photoes stored on the WHS.
In case it matters: A D-Link DIR-655 router ties everything together so that the WHS and the HTPC is wired with gigabit-LAN and the laptops connects wirelessly.