[mythtv-users] question about RAID

[Steve Adeff]

On Sunday 08 January 2006 14:30, Michael Haan wrote:
> On 1/8/06, Steve Adeff <adeffs at gmail.com> wrote:
> > On Sunday 08 January 2006 13:20, Joe Votour wrote:
> > > --- Steve Adeff <adeffs at gmail.com> wrote:
> > > > I'm in need of setting up RAID for my recordings
> > > > drive since now I'm able to
> > > > capture 2 HD + 1SD at a time, plus want to be able
> > > > to do commercial flagging,
> > > > and for the time being, playback at least 1 HD
> > > > stream.
> > > >
> > > > I ordered 2 new harddrives which, while different
> > > > than my current recordings
> > > > drive are the same size, so if needed I can use all
> > > > three.
> > > >
> > > > My question is, would it be better to use the
> > > > onboard RAID controller on my
> > > > motherboard or the software RAID linux has?
> > > >
> > > > I plan on doing a RAID0 since I'm not too worried
> > > > about loosing my data, but
> > > > more worried about overall speed. I plan on backing
> > > > up any recordings I want
> > > > to save to another drive (which hopefully will be a
> > > > RAID5 as my next drive
> > > > project).
> > > >
> > > > Thanks for the help!
> > > > --
> > > > Steve
> > > >
> > > > > _______________________________________________
> > > >
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> > > > mythtv-users at mythtv.org
> > >
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> > >
> > > It really depends on the controller itself.
> > >
> > > Most of the controllers included on motherboards
> > > nowadays are just software-based controllers anyway,
> > > so you'd be using CPU horsepower to control them.
> > >
> > > I did some research into this when my employer was
> > > looking to rebuild a server - he wanted to go SATA
> > > hardware RAID, so we now have a nice expensive 3ware
> > > card.
> > >
> > > Here's a page with some information about SATA RAID,
> > > with cards listed by hardware RAID or software RAID
> > > (aka fakeraid):
> > > http://linuxmafia.com/faq/Hardware/sata.html
> > >
> > > -- Joe
> >
> > I have nvRaid, so I guess I'm better off using the linux "md" raid.
> > So are these SATA ports useless to me? could I still use them and just
> > use "md" for the actual RAID stuff?
> >
>
> Yes, that's exactly what I do.  4 SATA 250's in a RAID 5 config using
> mdadm.

So you use the raid controller but use mdadm to handle the RAID array?

thanks,
Steve