ReclaiMe Data Recovery Training

RAID Recovery Course - Overall Test

What does content analysis help determine?

RAID level
disk order
block size

What is the recommended approach to check the quality of RAID recovery

check large files, larger than several block sizes
check many small files, smaller or equal to block size
folder tree check is enough

What is the correct order of the content analysis stages in ReclaiMe Pro?

parity analysis, ratio of zeros, mirror analysis
ratio of zeros, mirror analysis, parity analysis
mirror analysis, ratio of zeros, parity analysis

Where is RAID metadata stored?

at the beginning of the member disk
anywhere, depending on the implementation specifics
at the end of the member disk

Is it possible to recover data form a RAID0 in which one of the member disks failed?

yes, all the data can be recovered
yes, but only half of the data can be recovered
no, for all practical purposes it is impossible since all you get are files no larger than block size

Look at the picture on the right and choose the most complete configuration

full 4-disk RAID5, 64 KB block size
full 4-disk RAID5, 32 KB block size
4-disk RAID5 with one disk missing, 32 KB block size
full 4-disk RAID5, 16 KB block size

If data recovered from a RAID is incorrect it means that

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

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

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

Check what you can do with entropy analysis

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

What is the first step in RAID recovery?

RAID configuration recovery
mirror analysis
collecting all the information available about the case
entropy analysis

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