[mythtv-users] RAID suggestions?

[Sean Goodpasture]

On 10/26/07, Andrew Close <aclose at gmail.com> wrote:
>
> On 10/25/07, Sean Goodpasture <goofygrin at gmail.com> wrote:
> > > <snip>
> > > > I don't write myth recordings to it, I use unRaid for my myth
> > recordings.
> > > > Check it out, it's free for just three drives, but you'll require
> > another
> > > > computer.
> > > >
>
> > >   andy ---
> > >
> > > unRaid - http://www.lime-technology.com
> > >
> > > very cool looking.  not sure how performant it would be if you were
> > > actually recording to it, but looks like it would work nice for
> > > archiving and other media.
>
> >   sean ---
> > I'm recording with three HD tuners via QAM with no issues...
>
> really..?  cool.
> so you just have the unRaid shares mounted by your backend?  does your
> backend have any storage in it?  or does it just write directly to the
> unRaid box?
>
> i'm looking at splitting my combo fe/be and also increasing my
> storage.  i don't have a problem adding two machines: dedicated be and
> dedicated storage.
> have you tried using a lesser powered machine than recommended with
> the unRaid setup?
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Yeah I just mounted the shares on my BE and write directly to them over
gigE.  The BE has like a 20 gig drive in it (crusty PATA).  The unRaid box
has a celeron something cheap on a gigabyte board in it with Promise TX4
sata cards.  It basically doesn't use much juice at all.  I did have to turn
the auto drive spindown off because it was causing issues with the BE
unmounting the share (since it takes about 10 seconds for the share to
become available if the drive has spun down).  I also use slow deletes since
it is reiser and not a local device.

We record 2-6 hours of HD a day over QAM (Sesame Street + at least 2-3 prime
time shows) and rarely have any issues.  We have more issues with SD since
I've just got framegrabber cards and an underpowered BE (P4 1.8ghz, but it's
got 5 PCI slots!)
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