How to make softraid using mdadm in UBUNTU 10.10

1. Make raid auto detect partition(type fd)

ex) sudo fdisk /dev/sdb, new partition(n), primary partition(p), 1, select default value(start, end), partition type(fd)

2. Makes other disks using above method
3. Create softraid(ex striping)

sudo mdadm -C /dev/md0 --level=raid0 --raid-devices=2 /dev/sdb1 /dev/sdc1

4. Confirm softraid

sudo madam --detail /dev/md0

5. Make filesystem

sudo mkfs.ext4 /dev/md0

6. Mount filesystem

sudo mount /dev/md0 /md0