ReclaiMe Data Recovery Training

Partition Recovery Course - md-raid Test

Check operating system md-raid is used with

MacOS
Linux
Windows

Check what some NASes can do on the good disks in case of a NAS failure

destroy GPT partitions
erase some user data
spoil md superblocks
change array block size

The superblock part describing a particular disk is

the same only on adjacent disks
different on each array member disk
the same on all array member disks

Check what md superblock versions exist

1.x
2.x
0.8
0.9

The main component of md metadata is

superblock
i-node
header
GPT or MBR table

In what devices md-raid is commonly used?

DASes
Windows Servers
NASes

If one of the array disk has a damaged superblock how you can fix it?

just copy a superblock from a healthy disk
copy a superblock along with all GPT table from a healthy disk and edit a role for the disk with damaged superblock
copy a superblock along with all GPT table from a healthy disk

Where are copies of superblock stored?

on each array disk always in the beginning
only on the first member disk in the end
only on the first member disk in the beginning
on each array disk either in the beginning of the disk or in the end

What is the difference between superblocks among array member disks?

information about a particular disk
the copies of superblock are identical between array member disks

What is the difference between 1.x versions of md superblock?

superblock format
superblock location
superblock configuration

Return to the list of lessons

We have a mailing list in which we talk about interesting cases we encounter and share some tips and tricks.