From mboxrd@z Thu Jan  1 00:00:00 1970
From: starlight.2012q4@binnacle.cx
Subject: Re: question: no-bitmap RAID1 with off-site drive
Date: Mon, 12 Nov 2012 13:11:50 -0500
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Probably this is more elegant:

   mdadm --create --level=1 --raid-devices=2 --spare-devices=1 /dev/sdd /dev/sde missing

At 12:26 PM 11/12/2012 -0500, starlight.2012q4@binnacle.cx wrote:
>After some pondering, think I've figure it out.
>
>Best way to go is to set it up with
>
>  --create --level=1 --raid-devices=2
>
>for the initial pair of drives, then
>
>  --fail --remove
>
>the rotate-out drive, then
>
>  --add
>
>the alternate drive.  Now there will be
>three drive slots with one "removed" and two
>"active".