孤城浪子的地盘

RAID 10: Very High Reliability combined with High Performance

RAID 10:非常高可靠性与高性能的组合

Characteristics/Advantages

特征与优点

1. RAID 10 is implemented as a striped array whose segments are RAID 1 arrays

    RAID 10 用了RAID 1 的带区阵列

2. RAID 10 has the same fault tolerance as RAID level 1

    RAID 10 与 RAID 1有相同的容错性

3. RAID 10 has the same overhead for fault-tolerance as mirroring alone

    RAID 10 和镜像比有相同的开销

4. High I/O rates are achieved by striping RAID 1 segments

    传输速度比RAID 1快

5. Under certain circumstances, RAID 10 array can sustain multiple simultaneous drive failures

    某些情况下，RAID 10阵列在多个硬盘故障的情况下仍然能正常工作

6. Excellent solution for sites that would have otherwise gone with RAID 1 but need some additional performance boost

    替换RAID1的最佳方案

Disadvantages

缺点

7. Very expensive / High overhead

    很贵

8. All drives must move in parallel to proper track lowering sustained performance

     所有硬盘并行运行降低了持续的性能

9. Very limited scalability at a very high inherent cost

Recommended Applications 推荐用途

Database server requiring high performance and fault tolerance

RAID 10 需要最少4个硬盘才能实现