Mailing List Archive

> -----Original Message-----
> From: mythtv-users-bounces@mythtv.org
> [mailto:mythtv-users-bounces@mythtv.org]On Behalf Of Tom Howard
> Sent: Tuesday, August 12, 2003 8:44 PM
> To: mythtv-users@mythtv.org
> Subject: [mythtv-users] Split front/backend question
>
>
> Im thinking about making another setup were my backend and front end are
> seprate. This of course is obviously doable, however what about this:
> Backend has 2 PVR cards, and records to a HD that is on the FRONTEND's
> box. The front end can then be taken off the network and used seperatly.
>
> Example: Say I go on a lot of trips for a week at a time. I want to
> take a small box with all of my recorded shows on it. All I would have
> to do is unplug the frontend (something small like an EPIA M10000) and
> take it with me. And it would operate just fine.
>
> Of course then you have the question 'what about the backend durning
> these times? Where would it record to?' Well, it could be turned off,
> or mabye have its own HD to record to in the case that the front end was
> not online.
>
> Possible or dreaming?

Well, it's possible within the architecture of Myth, certainly, but you'd
have to 'run the numbers' to see if NFS (I'm assuming 100Mbit ethernet?)
will support writing 2 simultaneous MPEG-2 streams. People have reported OK
performance over NFS, but AFAIK that was only for a single RTjpeg or MPEG-4
stream. You might run into bandwidth issues with 2 PVR cards over NFS.

-JAC

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Unless your trying to save money on hard drives, why not just copy the
data from the backend to the frontend? You could transcode them to
something smaller as well (well, I can't do that with RTJPEG files and
mplayer but maybe you'll have better luck and it certainly works with
MPEG4 files.)

You can use rsync to keep the backend in line with the frontend before
going on vacation or just use cp, or whatever.

I think you should look for a better solution than depriving your
backend of having a locally attached hard drive.


On Tue, 2003-08-12 at 19:43, Tom Howard wrote:
> Im thinking about making another setup were my backend and front end are
> seprate. This of course is obviously doable, however what about this:
> Backend has 2 PVR cards, and records to a HD that is on the FRONTEND's
> box. The front end can then be taken off the network and used seperatly.
>
> Example: Say I go on a lot of trips for a week at a time. I want to
> take a small box with all of my recorded shows on it. All I would have
> to do is unplug the frontend (something small like an EPIA M10000) and
> take it with me. And it would operate just fine.
>
> Of course then you have the question 'what about the backend durning
> these times? Where would it record to?' Well, it could be turned off,
> or mabye have its own HD to record to in the case that the front end was
> not online.
>
> Possible or dreaming?
>
> Tom
>
>
>
> ______________________________________________________________________
>
> _______________________________________________
> mythtv-users mailing list
> mythtv-users@mythtv.org
> http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users

Okay, so I'm cool with your point, but ... even with rsync, could you
use the Front End without mySQL running on the front end if the front
end was offline? And if you put mySQL on the front end, wouldn't that
preclude the use of the back end when the front end is away? It seems
like this whole situation is flawed... not your response.

Thanks,

Scott


-----Original Message-----
From: Aran Cox
Sent: Wednesday, August 13, 2003 10:38 AM
To: Discussion about mythtv
Subject: Re: [mythtv-users] Split front/backend question

Unless your trying to save money on hard drives, why not just copy the
data from the backend to the frontend? You could transcode them to
something smaller as well (well, I can't do that with RTJPEG files and
mplayer but maybe you'll have better luck and it certainly works with
MPEG4 files.)

You can use rsync to keep the backend in line with the frontend before
going on vacation or just use cp, or whatever.

I think you should look for a better solution than depriving your
backend of having a locally attached hard drive.


On Tue, 2003-08-12 at 19:43, Tom Howard wrote:
> Im thinking about making another setup were my backend and front end
are
> seprate. This of course is obviously doable, however what about this:
> Backend has 2 PVR cards, and records to a HD that is on the FRONTEND's

> box. The front end can then be taken off the network and used
seperatly.
>
> Example: Say I go on a lot of trips for a week at a time. I want to
> take a small box with all of my recorded shows on it. All I would
have
> to do is unplug the frontend (something small like an EPIA M10000) and

> take it with me. And it would operate just fine.
>
> Of course then you have the question 'what about the backend durning
> these times? Where would it record to?' Well, it could be turned
off,
> or mabye have its own HD to record to in the case that the front end
was
> not online.
>
> Possible or dreaming?
>
> Tom
>
>
>
> ______________________________________________________________________
>
> _______________________________________________
> mythtv-users mailing list
> mythtv-users@mythtv.org
> http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users

I didn't think of the mysql issue... you could use replication in mysql
and run a replicated server on the "disconnected" front end but that's
probably silly.

I think the situation is kind of odd and the best bet is just to
transcode the shows and use mplayer or xine or whatever to view the
files. Sure the interface isn't as slick but at least the back end
stays where it belongs, at home recording TV shows.

On Wed, 2003-08-13 at 11:10, Scott Blomfield wrote:
> Okay, so I'm cool with your point, but ... even with rsync, could you
> use the Front End without mySQL running on the front end if the front
> end was offline? And if you put mySQL on the front end, wouldn't that
> preclude the use of the back end when the front end is away? It seems
> like this whole situation is flawed... not your response.
>
> Thanks,
>
> Scott
>
>
> -----Original Message-----
> From: Aran Cox
> Sent: Wednesday, August 13, 2003 10:38 AM
> To: Discussion about mythtv
> Subject: Re: [mythtv-users] Split front/backend question
>
> Unless your trying to save money on hard drives, why not just copy the
> data from the backend to the frontend? You could transcode them to
> something smaller as well (well, I can't do that with RTJPEG files and
> mplayer but maybe you'll have better luck and it certainly works with
> MPEG4 files.)
>
> You can use rsync to keep the backend in line with the frontend before
> going on vacation or just use cp, or whatever.
>
> I think you should look for a better solution than depriving your
> backend of having a locally attached hard drive.
>
>
> On Tue, 2003-08-12 at 19:43, Tom Howard wrote:
> > Im thinking about making another setup were my backend and front end
> are
> > seprate. This of course is obviously doable, however what about this:
> > Backend has 2 PVR cards, and records to a HD that is on the FRONTEND's
>
> > box. The front end can then be taken off the network and used
> seperatly.
> >
> > Example: Say I go on a lot of trips for a week at a time. I want to
> > take a small box with all of my recorded shows on it. All I would
> have
> > to do is unplug the frontend (something small like an EPIA M10000) and
>
> > take it with me. And it would operate just fine.
> >
> > Of course then you have the question 'what about the backend durning
> > these times? Where would it record to?' Well, it could be turned
> off,
> > or mabye have its own HD to record to in the case that the front end
> was
> > not online.
> >
> > Possible or dreaming?
> >
> > Tom
> >
> >
> >
> > ______________________________________________________________________
> >
> > _______________________________________________
> > mythtv-users mailing list
> > mythtv-users@mythtv.org
> > http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
>
>
>
> ______________________________________________________________________
>
> _______________________________________________
> mythtv-users mailing list
> mythtv-users@mythtv.org
> http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users