ReclaiMe Data Recovery Training

RAID Recovery Course - Overall Test

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

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

When to apply entropy analysis?

after content analysis
before content analysis
between zero and mirror analysis

When you should do parity analysis?

when content analysis is done but RAID level is still unknown
after entropy analysis
always

NASes only use software RAID

true
false

Is it possible to recover data if one of the member disks in a RAID5 failed?

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

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

Where is RAID metadata stored?

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

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

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