ReclaiMe Data Recovery Training
NAS Recovery Course - Overall Test
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
If md metadata is damaged then
you need to recover RAID configuration only if LVM is good
you need to recover RAID configuration only if disks were upgraded
you need to recover RAID configuration only if LVM is damaged
you need to recover RAID configuration
In case of filesystem damage you need to recover an array configuration
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
Filesystem damage in most cases is associated with
NAS box failure
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
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
When you do not need to recover RAID configuration when recovering a NAS?
LVM and md metadata are good
you deal with RAID5 with all disks present
you deal with XFS
you deal with RAID5 with one disk missing
Check the most common types of NAS failure
NAS box failure
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
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