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?

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

What is the first step in NAS recovery?

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

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)

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

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

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

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

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

false
true

Check the most common types of NAS failure

disk failure
filesystem failure
NAS box failure

Filesystem damage in most cases is associated with

disk failure
NAS box failure
operator errors

In case of filesystem damage you need to

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

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

false
true

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.