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磁盘重建是否会影响性能?

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disk-drives
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适用场景

  • ONTAP 9.x
  • Data ONTAP 8.x
  • Data ONTAP 7-模式

问题解答

  • Data ONTAP 在设计上以影响最小的方式完成重建/重建、但仍需要一些系统资源
  • 对于 CPU 或磁盘层接近资源瓶颈的系统,这可能会导致整体延迟增加 
  • 潜在的缓解方案:
    • 如果可能,请减少节点上的整体工作负载
    • 添加将工作负载分布在更多磁盘轴上的磁盘以增加 I/O 带宽。
    • 迁移到具有更多 I/O 带宽且 I/O 延迟降低的 SSD 。

注意: 从故障驱动器的奇偶校验重建数据的过程比执行磁盘副本更有效

 

 

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