ReclaiMe Data Recovery Training

NAS Recovery Course - NAS Recovery Preparations Test

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

EXT i-node
GPT database
EFI PART signature
main MBR

Why they do not recommend storing several disk image files on the same disk when recovering data?

the disk may degrade due to the frequent read requests
recovery will be too slow

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

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

true
false

Check what information you can get if you know a NAS vendor and exact NAS model

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

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

Check what you should ask a client about a NAS configuration

whether a client ever added disks
whether a client used disks of the same model in a NAS
whether a client changed an array type
whether a client ever replaced disks

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?

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

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

yes
yes, but it's better than nothing
no

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

false
true

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.