i have got 4 drives. /dev/sda /dev/sdb /dev/sdc and /dev/sdd /dev/sda raid mirror with /dev/sdc and /dev/sdb was raid mirror with /dev/sdd now this time i unplug the /dev/sdd for some problem diagnostics now /dev/sdb becomes /dev/sdc and /dev/sdc becomes /dev/sdb and my whole raid got massed. help please. Thanks