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启用了数据压缩的卷不会从闪存/外部 缓存中读取

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Category:
ontap-9
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perf<a>2009434820.</a>
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适用场景

  • ONTAP 9
  • 外部/Flash Cache
  • FAS

问题描述

  • 对于启用了数据压缩的卷、不会发生外部缓存的读取命中。
  • 这会导致从磁盘层进行更多读取、而旋转介质(磁盘)导致的延迟会更高
  • 如果压缩卷数量更多,系统可能会受到磁盘利用率高的影响,因为外部缓存几乎不会被使用。

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