[mythtv-users] diskless backend?

[Joe Harvell]

Alex:

I agree that separating the FE an BE makes the most sense.  But there 
are a few reasons I want to do the capturing in the viewing/listening area:

The first reason has to do with the signal quality.  When I capture the 
analog S-video signal from my satellite reciever and encode it in 
MPEG-2, I am losing quality.  I realize that my style of TV watching 
will most likely change after using Myth.  But I want to be able to 
split the S-video output of my satellite reciever and have one go to the 
capture card and one go to the TV directly.  This way I retain the 
ability to watch TV (not live TV) without loss of quality.  I have a 
friend who created cabling to carry an S-video signal 50 feet using two 
QuadShield coax cables.  But I don't want to do that.  (by the way, mine 
would need to go 100 - 120 feet).

The second reason is to increase my WAF.  If I pull the satellite 
receiver away from the TV and then misconfigure or otherwise screw up my 
backend or frontend, I have to explain to my wife why she can't watch 
TV.  With a separate backend / frontend I can recover from this in an 
emergency by moving my satellite receiver back to the TV area.  If I 
have the backend / frontend at the TV area I just have to switch the TV 
input to the satellite receiver.

The third reason is that there is less cabling work. Neither my 
satellite dish antenna nor my terrestrial antenna has a cable running to 
where my desktop PC is.  I can run the cables to it.  But that is more work.

Alex Brekken wrote:

> To be honest, I don't know if this would work, but even if it did - 
> I'm curious to know what the benefit would be?  When watching liveTV 
> you'll be doing a full roundtrip with the video-stream across your 
> network.  Why not just do the capturing where the disks are and have a 
> diskless frontend? 
>
> On 10/10/05, *Joe Harvell* <jharvell at dogpad.net 
> <mailto:jharvell at dogpad.net>> wrote:
>
>     I am considering building a diskless mini-ITX frontend/backend
>     using NFS
>     over switched 100base-T for the storage.  I would be capturing at most
>     two streams at a time and watching at most one.
>
>     Has anyone done this?  Any problems with the setup?
>
>     Also, when watching live TV, does the backend read from the file and
>     stream to the backend?  Or does it take what it is capturing and both
>     write it to the file and stream it to the frontend?  If it reads
>     it from
>     the file, then is there any likelihood of the data being cached?
>
>
>     --
>     Joe Harvell
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