Replace Drive In Software RAID Array

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Standard Process

sudo mdadm --manage /dev/md/raidarray_0 --fail /dev/sdc
sudo mdadm --manage /dev/md/raidarray_0 --remove /dev/sdc

Power off system and install new disk

sudo mdadm --manage /dev/md/raidarray_0 --add /dev/sdc

Using Intel BIOS RAID Firmware

sudo mdadm --manage /dev/md/raidarray_0 --fail /dev/sdc

Power off system and install new disk

Add new disk to the array using Intel BIOS RAID configuration tool (Ctrl-i) during system POST