RAID Recovery Course - Entropy Analysis Test

Check the criteria of a correct picture in entropy analysis

has one peak per disk
has several peaks
peaks do not overlap
there is one overlap in peaks

Check what you can get with entropy analysis

disk order ideas
spot synchronous RAIDs
original number of disks
block size
spot asynchronous RAIDs

Entropy is a measure of data randomness

true
false

Choose the correct statement

ordered data has high entropy
random data has high entropy

Choose that which has the highest entropy

text
parity in a RAID
video

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

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

Check the parameters you should vary in entropy analysis

number of disks
disk order
block size
RAID level

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

Choose to what you should apply the entropy analysis

full disk set
each disk separately

What analysis gives you a visual representation of parity blocks?

ratio of zeros analysis
entropy analysis
parity analysis

Next lesson - Parity Analysis

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