[K12OSN] replacing one raid hard drive

[Les Mikesell]

Barry Cisna wrote:
> Hi Burke,
> 
>   Sorry, my bad.  This is a raid 1(I think) . the mirroring type array.
> What will i run into when popping in the new/blank Sata drive? Any how to's?
> Do i need to stop at the raid bios- at bootup and mirror/"re-create"
> array? I know dumb question..I'm afraid ill wind up mirroring the blank HD
> /new drive to the "working" HD,,,yikes..,, Not good!!!:)..
> I've only deleted arrays when re-formatting HD's so i'm very green at this.
> I've tried to read up but still not sure of a 1. 2. 3. do this deal.

Is it linux software raid or handled by bios on the motherboard? You
can 'cat /proc/mdstat' to see if you have software raid.  If you
do, you can 'fdisk -l' the working drive to see the partition size(s),
then fdisk the replacement drive to match, then
mdadm -add /dev/md? /dev/sd?? where the ?'s would be determined
by the array and disk/partition numbers.   If it is done at the
bios level it is probably different for each vendor.

-- 
   Les Mikesell
    lesmikesell at gmail.com