ReclaiMe Data Recovery Training

NAS Recovery Course - Overall Test

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

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

true
false

In case of filesystem damage you need to

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

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

When you do not need to recover RAID configuration when recovering a NAS?

you deal with RAID5 with all disks present
LVM and md metadata are good
you deal with XFS
you deal with RAID5 with one disk missing

What is the first step in NAS recovery?

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

Filesystem damage in most cases is associated with

disk failure
NAS box failure
operator errors

If both LVM and md metadata are good then

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

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

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

Check the most common types of NAS failure

NAS box failure
disk failure
filesystem failure

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