RAID Part-2

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# mdadm –detail     /dev/md0        - to see the raid device details

# mdadm /dev/md0 --fail /dev/sdb3          - to do manual failure of disk

  

To see the detail of raid device and any failed disks

  

# mdadm /dev/md0 --remove /dev/sdb3               - Removing failed drive from RAID

  

# mdadm /dev/md0 --add /dev/sdb4         - Adding New disk to RAID Device

  

To Destroy RAID Device and its related disk completely wipe

# umount /raid         - to un mount the file system

# mdadm –stop /dev/md0   - Stopping RAID Device

# mdadm –remove /dev/md0         - to remove RAID Device

# fdisk /dev/sdb        use d to delete all the disks from OS