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为什么即使未设置卷效率策略、"volume show"也会为"Space Saved by重复数据删除"显示大于0的值?

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适用场景

ONTAP 9

问题解答

  Storage Virtual Machine (SVM)上使用ODX进行副本卸载时 、这是预期行为、因为ODX会在复制过程中使用重复数据删除。

在这种情况下、""volume efficiency show命令显示卷效率策略已禁用。

示例:

::> volume efficiency show
Vserver    Volume           State     Status      Progress           Policy
---------- ---------------- --------- ----------- ------------------ ----------
SVM_name   Volume_name      Idle      Idle for 1049:24:04 -        Disabled

但是、"volume show"输出在"通过重复数据删除节省的空间"处显示的值大于0KB。

示例:

::> volume show -volume vol1
                                     Vserver Name: SVM1
                                      Volume Name: vol1
...
        Volume Contains Shared or Compressed Data: true
                Space Saved by Storage Efficiency: 768KB
           Percentage Saved by Storage Efficiency: 0%
                     Space Saved by Deduplication: 768KB

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