--- Steve Adeff <[EMAIL PROTECTED]> wrote:
> On Sunday 08 January 2006 15:14, Joe Votour wrote:
> > --- Steve Adeff <[EMAIL PROTECTED] > wrote:
> > > So you use the raid controller but use mdadm to
> > > handle the RAID array?
> >
> > What you do is use the ports in non-RAID mode
> (i.e.
> > make them all regular SATA ports) and use mdadm to
> > create and manage the RAID array.
> >
> > -- Joe
>
> gotcha, sounds like a plan for me. One final
> question, all the examples for
> RAID 1 in mdadm shows only 2 drives in the array, is
> it possible to use 3 or
> more? and if so, can I add the additional drives
> later as needed?
>
> --
> thanks!
> Steve
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>
As far as I know, RAID-1 is meant for two drives
(mirror) only. I don't see why you couldn't add an
extra drive as a hot spare, to put into the mirror
when one drive dies.
If you have three (or more) drives, then I recommend
RAID-5 instead, though with four drives, you could do
a RAID-0+1 (I think that's what they call it -
basically a stripe that is then mirrored.)
As for adding drives, I'm not really sure. I have a
four drive RAID-5, and I'm not really sure how I'd add
another drive into the array - then again, I don't
have any more room in the hacked up SCSI drive case
and the Epia is out of IDE ports. I know that you can
add them as hot spares, but I'm not sure about into
the array themselves.
Sorry this doesn't help much, perhaps somebody who is
more knowledgeable about RAID and using it within
MythTV (as opposed to just using it for a Samba file
server) can give more pointees.
-- Joe
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Agreed. Don't recall how many drives you have, but if it's three plus and they're the same size (I think you said they were), I'd go for RAID 5. I know you said data loss wasn't an issue and if that's really true, then 0 is fine. Obviously 5 gives you everything that 0 does but with a trade-off of n-1 space for some fault tolerance.
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