ReclaiMe Data Recovery Training

RAID Recovery Course - Overall Test

If data recovered from a RAID is incorrect it means that

both filesystem or RAID recovery might fail, investigation is needed
RAID configuration recovery failed
filesystem recovery failed

Look at the picture on the right and guess the possible RAID level

Full RAID 5 with a hotspare
RAID 5 with a missing disk
Full RAID5
RAID10

Check what you can do with entropy analysis

notice that start offset doesn't equal zero
detect the first disk in the RAID
spot the disks which do not belong to the RAID in question
spot the disks which do not form a parity-based array

Look at the picture on the right and guess the possible RAID level

RAID6 with a missing disk
RAID 5 with a blank disk
Full RAID 6 with a hotspare
Full RAID6

Is it possible to recover data if one of the member disks in a RAID10 failed?

yes, but only part of the data is recoverable
no
yes, all data is recoverable
depends on which disk failed

When to apply entropy analysis?

before content analysis
between zero and mirror analysis
after content analysis

What does content analysis help determine?

RAID level
disk order
block size

NASes only use software RAID

false
true

What information about RAID you can get just by looking at the disks in Disk Management?

idea about first disk
idea about RAID level
block size

When to apply parity analysis?

before zero and mirror analysis
after zero and mirror analysis
between zero and mirror analysis
after entropy analysis

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