ReclaiMe Data Recovery Training

Partition Recovery Course - md-raid Test

How the number of a disk in the array is called in md-raid?

disk function
disk identifier
role

Why earlier superblock versions can give you more information about a RAID?

because such superblocks are typically not affected by a rebuild
because such superblocks are typically written to safe place
because when NAS detects a disk failure, it no longer updates superblocks on them

The main component of md metadata is

header
GPT or MBR table
superblock
i-node

Check operating system md-raid is used with

Windows
Linux
MacOS

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

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

When recovering md how you should sort superblocks?

by size
by relevance
by generation number

Where are copies of superblock stored?

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

If you know that array member disks, say in RAID 5, are all of the same size, then

the disks will use the same partition layout
md superblocks are located at the same offset in the beginning of the disks
md superblocks are located at the same offset either in the beginning or in the end of the disks depending on superblock version
md superblocks are located at the same offset in the end of the disks

Check what md superblock versions exist

0.9
0.8
2.x
1.x

md-raid allows to create arrays without superblocks at all

rue
false

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