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NAS Recovery Course - NAS Recovery Preparations Test
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 based on what you can estimate the state of physical disks in a NAS
sounds coming from the disks
the S.M.A.R.T. attributes
the words of a client
When recovering a NAS, it is always better to create disk image files rather than disk clones
false
true
The information about a NAS coming from a client is often unreliable
no
yes, but it's better than nothing
yes
Choose the advantage of disk images compared to disk clones
convenience in storage and archival
speed
reliability
The sum of partition sizes should be close to the size of a physical disk with both MBR and GPT disks
true
false
Check those S.M.A.R.T. attributes pointing to the bad condition of a disk
current pending sector count
start/stop count
offline uncorrectable sector count
reallocated sectors count
G-sense error rate
What helps you determine a sector size for disks partitioned with GPT?
main MBR
EXT i-node
GPT database
EFI PART signature
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
divide the total size of partitions by 8
multiply the total size of partitions by 4
Check what you should ask a client about a NAS configuration
whether a client ever added disks
whether a client ever replaced disks
whether a client used disks of the same model in a NAS
whether a client changed an array type
Next lesson - Partitions in NASes