| 分析raid5阵列在硬盘上的数据分布，恢复不同的raid5阵列瘫痪或故障导致的数据丢失，小编采用WINHEX为例说明一下常见的raid5数据排列。
Level 5: Backward Parity aka Left Asynchronous (Adaptec)是左循环不对称( 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)是左循环对称(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的双循环结构 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)是右循环不对称(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 |
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