Thursday, September 27, 2012

How to recovery data in case of RAID 5

Precautions need to be followed before retrieving Data  :-

  1. Do not format the Hard disk.
  2. Minimum two Hard disk is required for recovery of data.
  3. Do not try to mount single Hard disk of RAID 5 on any Linux system.

Steps to recover data : -

1. Install mdadm package in normal Linux system.
2. Connect the two properly working (RAID 5)Hard disk to that machine.
3. Assemble raid device(hard disk) using the below given command

    mdadm -A -R /dev/md5 /dev/XXX /dev/XXX


Note :- Here XXX is the Harddisk Name(device name) for eg:- /dev/sda

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