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How the 'logical used size' is calculated of the 'volume show' command

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ontap-9
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Applies to

  • ONTAP 9
  • Flexvol Volume

Answer

From the document explanation below, the formula is "Logical Used Size = Used Size + Space Saved by Storage Efficiency"
 
-logical-used  This value includes all the space saved by the storage efficiency features along with the physically used space.This does not include Snapshot reserve but does consider Snapshot spill.
 
  • Example:
::> volume show -vserver <> -volume <> -instance
 
Used Size: 5.43TB
Total Physical Used Size: 5.72TB
 Space Saved by Storage Efficiency: 57.76GB
     Logical Used Size: 5.49TB
   Space Reserved for Snapshot Copies: 5%
       Snapshot Reserve Used: 472%
Logical Size Used by Active Filesystem: 4.37TB
        　       Space Guarantee Style: volume
                    Fractional Reserve: 100%

Additional Information

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