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什么是NDMP文件历史记录后退压力？它有什么影响？

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适用场景

  • ONTAP 9
  • NDMP

问题解答

  • 生成、通信和载入文件历史记录始终会给备份增加一些开销。
    • 即使没有其他性能问题、在禁用文件历史记录的情况下、备份通常也会运行得更快。
    • 文件历史记录通信的一个步骤出现瓶颈、可能会触发下游的延时。
  • 由于NDMP和转储的协同工作方式、文件历史记录传送或载入延迟会降低发生原因的整体备份性能。
    • 也就是说、 dump 在备份应用程序/DMA完全载入并确认关联文件历史记录之前、无法继续向备份流写入数据。

追加信息

常见问题解答：NDMP文件历史记录

 

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