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由于 ONTAP 9.14.1 或更高版本上的 BRE/LRSE 节流而导致的 SnapMirror 缓慢或卷移动或低吞吐量

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适用于

  • ONTAP 9.14.1 及更高版本
  • SnapMirror
  • 块复制引擎(BRE)
  • 具有存储效率的逻辑复制(LRSE)
  • 卷移动
  • CBS(Cloud Backup Service)/ SnapMirror cloud(SMc)

问题

  • 由于复制引擎限制而导致 SnapMirror 传输期间的低吞吐量
  • 首先验证以下项目是否已作为潜在问题被消除
    • 避免一次运行过多的 SnapMirror 传输
    • 分散 SnapMirror 传输以减少影响
    • 在较低的用户工作负载和较低的 CPU 活动期间启动 SnapMirror 传输
    • 检查是否正在使用 SnapMirror 的全局限制机制
    • 如果复制流量通过 WAN,您可以为这些 SnapMirror 策略启用网络压缩以提高性能
      • 注:在 CPU 利用率已经很高的情况下,不要使用网络压缩
  • 由于源控制器上的复制引擎限制,在 Cloud Backup Service 传输到 Azure 等云供应商期间的吞吐量较低。 

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