ReclaiMe Data Recovery Training

NAS Recovery Course - NAS Recovery Preparations Test

Check based on what you can estimate the state of physical disks in a NAS

the S.M.A.R.T. attributes
sounds coming from the disks
the words of a client

Choose the advantage of disk clones compared to disk images

reliability
convenience in storage and archival
speed

When recovering a NAS, it is always better to create disk image files rather than disk clones

true
false

Choose the advantage of disk images compared to disk clones

convenience in storage and archival
reliability
speed

Check those S.M.A.R.T. attributes pointing to the bad condition of a disk

The information about a NAS coming from a client is often unreliable

yes
yes, but it's better than nothing
no

What helps you determine a sector size for disks partitioned with GPT?

EFI PART signature
GPT database
main MBR
EXT i-node

What do you need to try if the sum of sizes of partitions does not correspond to the size of a physical disk and you suspect the sector size is uncorrect?

divide the total size of partitions by 8
multiply the total size of partitions by 4
multiply the total size of partitions by 8

The sum of partition sizes should be close to the size of a physical disk with both MBR and GPT disks

false
true

You need to check sector sizes for each disk form a NAS when

disks of different models are used in a NAS
array type has been changed
a client does not remember what sector sizes he/she set up when installing disks

Next lesson - Partitions in NASes

We have a mailing list in which we talk about interesting cases we encounter and share some tips and tricks.