ReclaiMe Data Recovery Training

Partition Recovery Course - md-raid Test

The superblock part describing an array is

different on each array member disk
the same only on first and the last disks
the same on all array member disks

Superblock is always located before data

false
true

Check what can be designated as "md"

software RAID metadata
NASes using Linux
driver
disks from a NAS

md-raid allows to create arrays without superblocks at all

rue
false

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

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

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

md superblocks are located at the same offset in the end of the disks
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

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

Superblock includes two significantly different parts; one describes a RAID and other – a specific disk

true
false

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

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

disk function
role
disk identifier

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