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SnapMirror目标卷与源的大小差异很大

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适用场景

  • ONTAP 9
  • SnapMirror
  • 卷效率

问题描述

即使传输使用的是LRSE、SnapMirror目标卷可能会显示占用的空间更多(请注意 Logical Used 、这是相同的、表示每个卷中的用户可见数据量相同):
 
示例:
 
volume :源

    Feature                       Used    Used%
    --------------------------------    ----------------    -----
    User Data                     3.03TB     83%
    Filesystem Metadata                2.98GB      0%
    Inodes                      48.1GB      1%
    Snapshot Reserve                  564GB     15%
    Deduplication                   15.8GB      0%
    Quota Metafiles                  20.0KB      0%
    Total                       3.65TB     100%
    Total Physical Used                3.20TB     87%
    Logical Used                   20.1TB     549%

Volume : destination

    Feature                       Used    Used%
    --------------------------------    ----------------    -----
    User Data                     7.06TB     66%
    Filesystem Metadata                1.70TB     16%
    Inodes                      48.1GB      0%
    Snapshot Reserve                 1.60TB     15%
    Total                       10.4TB     97%
    Total Physical Used                8.81TB     82%
    Logical Used                   20.1TB     188%

 

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