ReclaiMe Data Recovery Training

RAID Recovery Course - Entropy Analysis Test

What has the higher entropy?

data block in a RAID
parity block in a RAID

Check what you can do with entropy analysis

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

Choose that which has the highest entropy

text
video
parity in a RAID

Choose that which has the lowest entropy

video
parity in a RAID
text

Look at the picture on the right and choose the appropriate description

selected block size is larger than the actual block size
selected block size is less than the actual block size
selected number of disks is wrong

How to do entropy analysis

launch the analysis and wait until ReclaiMe Pro gives you the correct RAID configuration
change settings to make pictures match expectations

When to apply entropy analysis?

after content analysis
between zero and mirror analysis
before content analysis

Check the parameters you should vary in entropy analysis

block size
number of disks
disk order
RAID level

Choose the correct statement

ordered data has high entropy
random data has high entropy

Choose to what you should apply the entropy analysis

full disk set
each disk separately

Next lesson - Parity Analysis

We have a mailing list in which we talk about interesting cases we encounter and share some tips and tricks.