RAID Recovery Course - Parity Analysis Test

Parity is a special function calculated over data blocks

false
true

Choose the correct statement

A XOR A < 0
A XOR A > 0
A XOR A = 0

Choose the property of XOR function due to which "mirrors are always even"

A XOR 0 = A
A XOR A = 0
A XOR B = B XOR A

Look at the picture on the right and guess the possible RAID level

RAID 6 with a missing disk
Full RAID6
Full RAID 5 with a hotspare
RAID 5 with a missing disk

Choose the property of XOR function due to which "you do not need to know the parity location when reconstructing a missing disk"

A XOR 0 = A
A XOR A = 0
A XOR B = B XOR A

Check for what parity tests are done

full disk set
all disk combinations with one disk excluded
each disk separately

Choose the correct statement

A XOR 0 = A
A XOR 0 = 0
A XOR 0 = 1

Look at the picture on the right and guess the possible RAID level

RAID 5 with a missing disk
Full RAID5
RAID 5 with a blank disk

Choose the property of XOR function due to which "blank disks litter the parity analysis"

A XOR 0 = A
A XOR B = B XOR A
A XOR A = 0

Look at the picture on the right and guess the possible RAID level

RAID 5 with a blank disk
Full RAID 6 with a hotspare
RAID6 with a missing disk
Full RAID6