ReclaiMe Data Recovery Training

NAS Recovery Course - Overall Test

In case of filesystem damage you need to recover an array configuration

true
false

What is the first step in NAS recovery?

ask a client about a NAS and NAS failure
clone the disks
identify the filesystem on a NAS

Check what determines the quality and complexity of NAS recovery in case of one or several member disk failures?

how much time has passed since the disk failure
actions of a client after disk failure
the state of RAID metadata (md/LVM)

In case of filesystem damage you need to

create regions on NAS disks, do RAID recovery, and then file recovery
do file recovery
do RAID recovery first and then file recovery

Filesystem damage in most cases is associated with

NAS box failure
operator errors
disk failure

Does it make sense to launch two data recovery tools in turn over the same set of NAS disks?

no, it is just a waste of time, all major data recovery tools work the same way
yes, to be sure that nothing is overlooked due to difference in data recovery algorithms

If both LVM and md metadata are good then

you do not need to recover an array configuration
you need to recover RAID configuration only if disks were upgraded
you need to recover RAID configuration anyway

In case of filesystem damage LVM and md-raid metadata are usually correct

true
false

What is the recommended approach when recovering an array configuration on NAS disks?

do RAID recovery on the physical disks
create regions on NAS disks and do RAID recovery on them

If md metadata is damaged then

you need to recover RAID configuration only if LVM is damaged
you need to recover RAID configuration
you need to recover RAID configuration only if disks were upgraded
you need to recover RAID configuration only if LVM is good

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