RAID Implementation on Linux Servers


#mdadm --create /dev/md0 --level=0 --raid-devices=2 /dev/hda6 /dev/hda7          (RAID -0)
continue creating array - y
#mdadm --create /dev/md1 --level=1 --raid-devices=2 /dev/hda8 /dev/hda9           (RAID - 1)
continue creating array - y

# RAID1 conf printout:

# mdadm --create /dev/md5 --level=5 --raid-devices=3 /dev/hda10 /dev/hda11 /dev/hda12(RAID -- 5)
continue creating array - y

# mkfs.ext3 /dev/md0 - to create a file system
# mkfs.ext3 /dev/md1
# mkfs.ext3 /dev/md5

# mkdir raid0
# mkdir raid1
# mkdir raid5

#mount /dev/md0 raid0
#mount /dev/md1 raid1
#mount /dev/md5 raid5

# df -hP

# cat /proc/mdstat - to check
# mdadm --detail /dev/md0
# mdadm --detail /dev/md1
# mdadm --detail /dev/md5

# vi /etc/fstab

/dev/md0 /root/raid0 ext3 defaults 0 0
/dev/md1 /root/raid1 ext3 defaults 0 0
/dev/md5 /root/raid5 ext3 defaults 0 0
:wq

# mount -a