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Compression of existing data cannot proceed. Large amount of shared data can cause significant extra space usage

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Category:
ontap-9
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core
Last Updated:

Applies to

 

  • ONTAP 9.x
  • Storage Efficiency 

Issue

  • Volume Efficiency command fails 
  • Example: 

Cluster::> volume efficiency start -vserver <Vserver> -volume <volume> -scan-old-data true -compression true -snapshot-blocks true -shared-blocks true -dedupe true -compaction true
Error: command failed: Failed to start efficiency on volume "<Volume>" of Vserver "<Vserver>": Compression of existing data cannot proceed. Large amount of shared data can cause significant extra space usage.

 

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