Re: What's the typical RAID10 setup?

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On Mon, Jan 31, 2011 at 12:41 PM, Mathias Burén <mathias.buren@xxxxxxxxx> wrote:
> Hi,
>
> RAID10 is (could be) setup in this way, correct?
>
> 2 devices in a RAID1
> 2 devices in another RAID1
I usually use LVM striping over two RAID1 arrays for this.
>
> Then you run RAID0 on top of them. If you're lucky you can lose 2
> devices at most (1 in each RAID1).
>
> If you have, say 6 HDDs, would you create 3 RAID1 volumes? Then create
> a RAID0 on top of them?
>
> How would one go about expanding a 4 HDD RAID10 into a 6 HDD RAID10?
> Is it "just" a matter of creating a new RAID1 array of the 2 new HDDs,
> then adding them to the RAID0, then expanding whatever is on that
> (lvm, xfs, ext4)?
>
> Are there any design tips, or caveats? For example, how many disks
> would you use at most, in a RAID10 setup?
>
> Kind regards,
> // Mathias
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[COOLCOLD-RIPN]
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