How does RAID 5 work ?

3 Disk RAID 5 Group

Logical Image from parity Can you work it out ?

Parity = A + B Parity figures in Red All other figures are data

Crash

Same RAID 5 Group with 1 disk crashed.

21

9

3

54

6

3

13 7

7 10

2 = 3-1 , 4 = 9-5, 13 =6+7,7 = 10- 3