Re: Rotating RAID 1

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On Mon, Aug 15, 2011 at 6:42 PM, NeilBrown <neilb@xxxxxxx> wrote:
> So if there are 3 drives A, X, Y where A is permanent and X and Y are rotated
> off-site, then I create two RAID1s like this:
>
>
> mdadm -C /dev/md0 -l1 -n2 --bitmap=internal /dev/A /dev/X
> mdadm -C /dev/md1 -l1 -n2 --bitmap=internal /dev/md0 /dev/Y

That seems nice for 2 disks, but adding another one later would be a
mess. Is there any way to play with slots number manually to make it
appear as an always degraded RAID ? I can't plug all the disks at once
because of the maximum of 2 ports.
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