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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?
recovery will be too slow
the disk may degrade due to the frequent read requests
Check what you should ask a client about a NAS configuration
whether a client ever added disks
whether a client changed an array type
whether a client used disks of the same model in a NAS
whether a client ever replaced disks
What helps you determine a sector size for disks partitioned with GPT?
EFI PART signature
GPT database
main MBR
EXT i-node
When recovering a NAS, it is always better to create disk image files rather than disk clones
false
true
Check based on what you can estimate the state of physical disks in a NAS
sounds coming from the disks
the words of a client
the S.M.A.R.T. attributes
You need to check sector sizes for each disk form a NAS when
disks of different models are used in a NAS
a client does not remember what sector sizes he/she set up when installing disks
array type has been changed
Choose the advantage of disk clones compared to disk images
reliability
convenience in storage and archival
speed
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
Check those S.M.A.R.T. attributes pointing to the bad condition of a disk
current pending sector count
G-sense error rate
offline uncorrectable sector count
reallocated sectors count
start/stop count
Next lesson - Partitions in NASes