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在ONTAP系统中、重复数据删除和性能有哪些注意事项?

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ontap-9
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perf
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适用场景

  • ONTAP 9
  • FAS
  • AFF
  • Cloud Volumes ONTAP

问题解答

  • 避免对更改率较高的数据集进行重复数据删除。即、每隔几天就会覆盖一次的数据
  • 避免在存储效率提高小于~10%的卷上运行重复数据删除操作。

示例: datastore 卷的效率提高远高于10%、在此示例中、使用 df -s 命令提高55%

::> df -s datastor​e​​​​ Filesystem used saved %saved Vserver /vol/datastore/ 289150724 356485168 55% svmtest​​​ 
  • 实时效率还会降低每次读取或写入硬盘系统(FAS)时的延迟
    • 由于磁盘延迟成本高昂、FAS系统会默认禁用实时效率功能。
    • AFF或容量闪存会根据需要围绕此功能构建
  • 确保 启用了性能监控、以便可以监控运行重复数据删除时的性能、与空闲时的性能相比、它在CPU/磁盘上的等待时间更低。
    1. ActiveIQ Unified Manager 是一款免费产品、可与存储部署在同一网络中。
    2. ActiveIQ门户 确实具有性能图、但级别非常高。

追加信息

TR-3966 提供了有关FAS和AFF系统中重复数据删除的详细信息

 

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