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@xxxxxxxxxxx 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". -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html