[mythtv-users] small portable DVR

Greg Oliver oliver.greg at gmail.com
Sun Jan 13 16:45:34 UTC 2019


On Sun, Jan 13, 2019 at 9:18 AM Jay Harbeston (ISeePeople) <
jharbestonus at gmail.com> wrote:

> > On Jan 13, 2019, at 10:06 AM, James Abernathy <jfabernathy at gmail.com>
> wrote:
> >>>
> >> I found that I could not use a USB stick as the storage for running and
> instead used a class 10 128GB memory card for mythtv backend on rip 3b+.
> >>
> >> You would then use another rip 3b+ as the frontend. That should do what
> you need. You may even be able to do the rpib+ frontend wirelessly due to
> improvements made in the 3b+.
> >>
> >> You will also need the mpeg2 license ONLY for the frontend if your
> broadcasts are mpg2.
> >>
> >> For both Rpi3b+’s you would want to set the performance mode described
> in the mythtv raspberry pi page.
> >>
> >> Regards,
> >
> > So I would have a high speed 32GB microsd memory card to run raspbian
> and mythtv backend and the external USB hard drive would be a self powered
> 2TB Hard drive. Would you start with mythtv light and then add the database
> and mythweb?
> >
>
> Based on my testing, the USB port has not been fast enough for storage.  I
> found I needed to use the sd card slot for storing recordings, hence the
> 128 GB sd card. They are currently around $25 on amazon for Samsung/sandisk.
>
> Experimentation would be a good validation of the above using the small
> 32gb sd card with and without the 2TB usb drive.
>
> You would need the database installed first followed by mythtv light and
> then myth web.
>

The USB port @ 244 Mbit/s will do way faster than the SD card slot ever
will.  The speed rating on the SD card slot means nothing - the controller
logic to read/write/verify blocks on removeable media will be *ultimately*
slower..
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