ReclaiMe Data Recovery Training

RAID Recovery Course - Overall Test

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

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

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

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

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

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

If data recovered from a RAID is incorrect it means that

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

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

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
yes, all the data can be recovered

When to apply entropy analysis?

after content analysis
between zero and mirror analysis
before content analysis

Where is RAID metadata stored?

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

What does content analysis help determine?

RAID level
disk order
block size

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

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

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