[mythtv-users] Software RAID5 faster than RAID10?

[Brian Wood]

On Monday 13 April 2009 16:05:21 Gordon McCrae wrote:
> Brian Wood wrote:
> > On Monday 13 April 2009 14:02:49 Raymond Wagner wrote:
> >> Ben Curtis wrote:
> >>> <snip>
> >>
> >> Of course this is all moot for storing recordings.  One independent disk
> >> for each tuner that could be recording simultaneously is the ideal
> >> setup.
> >
> > Of course that depends on what you mean by "ideal". As long as your
> > storage system can handle the maximum possible demand if all your tuners
> > are recording, there is really no need to go beyond that. You also have
> > to consider playing back multiple files, if your system allows that.
> >
> > What you describe would provide no redundancy, and would be wasteful of
> > power and space.
> >
> > I don't think there is any "one size fits all" storage solution, a major
> > factor is how important is television to you, personally if I lost all my
> > stored video it wouldn't be a big deal, just an excuse to build a bigger,
> > better box.
> >
> > Anything I really want to save I archive off to DVD or tape anyway. Every
> > drive ever made will fail eventually.
>
> I'm currently recording from 5 USB  DVB-T tuners to a single 1Tb HDD. In
> addition, up to five frontends pulling video off at the same time.
>
> Never seen any problems, don't expect to.

Well if they were all HD streams, and you were trying to write and read 10 
different streams, and your DB was also on that drive...

But in the real world you should be fine.

>
> I suspect all the talk about "ideal" scenarios is a case of classic over
> engineering of the problem.

Exactly, that's what techies love to do, provided their bank accounts are also 
in an "ideal" situation.

It took me a while to finally learn that more than you need is just as bad as 
less than you need, especially when you start thinking about things like 
power consumption.

-- 
beww
beww at beww.org