Level 5: Backward Parity aka Left Asynchronous (Adaptec)是左循環不對稱( Backward3-2-1)
Component 1: 1 3 P
Component 2: 2 P 5
Component 3: P 4 6
Level 5: Backward Dynamic Parity aka Left Synchronous (AMI and Linux standard)是左循環對稱(Backward dyn.disk)
Component 1: 1 5 9 P
Component 2: 2 6 P 10
Component 3: 3 P 7 11
Component 4: P 4 8 12
Level 5: Backward Delayed Parity (HP/Compaq)是HP的雙循環結構
Component 1: 1 3 5 7 9 11 13 15
Component 2: 2 4 6 8 P P P P
Component 3: P P P P 10 12 14 16
Level 5: Forward Parity (aka Right Asynchronous)是右循環不對稱(Forward 1-2-3)
Component 1: P 3 5
Component 2: 1 P 6
Component 3: 2 4 P
Level 5: Forward Dynamic Parity (aka Right Synchronous)
Component 1: P 6 8 10
Component 2: 1 P 9 11
Component 3: 2 4 P 12
Component 4: 3 5 7 P
Level 5: Forward Delayed Parity
Level 5: Forward Dynamic Delayed Parity (CRU/Dataport)
Level 5EE: Backward Parity (Adaptec)
Component 1: 1 3 S P
Component 2: 2 S P 7
Component 3: S P 5 8
Component 4: P 4 6 S (S = spare)
Level 5EE: Forward Parity
Component 1: 1 P S 7
Component 2: 2 3 P S
Component 3: S 4 5 P
Component 4: P S 6 8