[mythtv-users] PCI-E Analog Card
beww at beww.org
Sat Jan 23 00:09:44 UTC 2010
On Friday 22 January 2010 04:57:28 pm Mark wrote:
> Brian Wood wrote:
> > You'll want to make disk I/O doesn't become a bottleneck. Certainly don't
> > try to use USB-connected drives. USB may theoretically be able to handle
> > the speed required, but USB systems somehow never live up to their
> > performance claims.
> > You'll want fast drives, and you may consider a RAID system that will
> > increase performance (RAID0 or a variant thereof that spreads the R/W
> > load over several drives).
> > I'd go with a server class motherboard for a system like you describe, or
> > even multiple systems capturing 5 channels per machine.
> > An older SCSI-based server might work for you, they can be had relatively
> > cheaply these days (at least compared to their original cost). SCSI
> > drives are also available cheaply, but large capacity SCSI drives are
> > expensive. You might look into SAS as well.
> > Don't try to cheap out, a system like you want will have to perform very
> > well, and you generally have to pay for that. Disk I/O will be more
> > important than CPU power, and that's usually found in server machines.
> Those are good points. I'm guessing you'll want a sata or sas system
> with a pci-e or pci-x controller with as
> many ports as you can get. There's some good threads on this over at
> AVSforums. media servers.
Depending on how much total storage is needed, an older PCI-X type server with
SCSI drives might be adequate, and would certainly be cheaper than a new SAS
machine. Machines of that type are power hogs by today's standards, but that
might not be a big factor if running in an institutional environment with
I'm not suggesting these particular machines or the vendor, but this is an
example of the prices on older SCSI servers:
Going to 15K RPM drives would provide even faster I/O.
Older Sun machines are also available used these days.
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