RAID Recovery Course - Overall Test
When to apply entropy analysis?
after content analysis
before content analysis
between zero and mirror analysis
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
When you should do parity analysis?
when content analysis is done but RAID level is still unknown
after entropy analysis
What does content analysis help determine?
Check what you can do with entropy analysis
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
notice that start offset doesn't equal zero
NASes only use software RAID
Where is RAID metadata stored?
at the end of the member disk
at the beginning of the member disk
anywhere, depending on the implementation specifics
Is it possible to recover data if one of the member disks in a RAID10 failed?
yes, all data is recoverable
yes, but only part of the data is recoverable
depends on which disk failed
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
If data recovered from a RAID is incorrect it means that
both filesystem or RAID recovery might fail, investigation is needed
filesystem recovery failed
RAID configuration recovery failed
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