ReclaiMe Data Recovery Training

RAID Recovery Course - RAID Introduction Test

Can block size be 1 sector?

yes
no

Speed improvement is achieved due to the fact that:

data on a RAID is not fragmented
each member disk in RAID is faster than a regular hard drive
two data blocks on two disks can be read in one operation

NASes only use software RAID

true
false

Check the reasonably acceptable RAID block sizes

2048 bytes
512 bytes
128 KB
4094 bytes

What type of the device can implement exotic RAIDs?

software
low-end hardware
high-end hardware

How data is distributed to disks in a JBOD

in contiguous streams
data is divided into blocks of different size and then blocks are written to the disks
data is divided into blocks of the same size and then blocks are written to the disks

More complex RAIDs have more parameters

true
false

How data is distributed to disks in a RAID0

in contiguous streams
data is divided into blocks of the same size and then blocks are written to the disks
data is divided into blocks of different size and then blocks are written to the disks

Check those which can be RAID parameters

disk order
block size
start offset
block pattern

Next lesson - RAID levels

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