[mythtv-users] Re: Max number of recording cards in one backend?

[iso]

On Mon, Aug 15, 2005 at 03:26:14PM -0400, Erik Pettersen wrote:
>> So what's a 'reasonable' number, can I get away with 3xDVB-T + 1xPVR-250 ?
> I'm not sure how that translates PCI bandwith wise to 3 DVB-T's and 1
> PVR250, but *shrug*

I'm not sure how DVB-T cards work, but in the UK each mux is 24MBit, and
a PVR250 is arround 8Mbit for a total bandwidth of 80mbit/s

That's about 5 PVR500's with both tuners outputting 8mbit/second

If you can choose to ounly output the ~6mbit individual program then
you're down to under 30mbit/second even with the worst you're likely to
see from statistical multiplexing.
 
> Wouldn't the hard disk be the choke point before the PCI bus would, or
> am I off base with that assumption?

Normally yes, however a striped raid would work.

Do DVB-T cards capture the entire mux or just output the individual program 
stream? (my DVB knowlege is limited - too many tables for my poor brain, but 
I think that's the right terminology)