Skip to main content
NetApp Knowledge Base

How is Data reduction displayed on Cluster capacity in System Manager calculated?

  1. Last updated
  2. Save as PDF
Views:
547
Visibility:
Public
Votes:
1
Category:
ontap-system-manager
Specialty:
om
Last Updated:

Applies to

ONTAP System Manager 9.9.1 or later

Answer

  • Data reduction displayed on Cluster capacity in System Manager DASHBOARD is calculated based on Total Data Reduction Logical Used Without Snapshots and Total Data Reduction Physical Used Without Snapshots seen by storage aggregate show-efficiency -instance command at the advanced privilege level
clipboard_eb9d311a8bac3184ad267a788bf9e7ff2.png
::*> storage aggregate show-efficiency -instance
 
                       Name of the Aggregate: <AGGREGATE_NAME>
                Node where Aggregate Resides: <NODE_NAME>
Logical Size Used by Volumes, Clones, Snapshot Copies in the Aggregate: 214.1GB
                         Total Physical Used: 26.41GB
              Total Storage Efficiency Ratio: 8.11:1
Total Data Reduction Logical Used Without Snapshots: 85.16GB
Total Data Reduction Physical Used Without Snapshots: 26.04GB
Total Data Reduction Efficiency Ratio Without Snapshots: 3.27:1
Total Data Reduction Logical Used without snapshots and flexclones: 42.30GB
Total Data Reduction Physical Used without snapshots and flexclones: 26.02GB
Total Data Reduction Efficiency Ratio without snapshots and flexclones: 1.63:1
...
  • It is calculated using the following formula:
    (sum of Total Data Reduction Logical Used Without Snapshots for all aggregates) / (sum of Total Data Reduction Physical Used Without Snapshots for all aggregates)

Notes:

  • If cluster has only one aggregate, Data reduction matches Total Data Reduction Efficiency Ratio Without Snapshots
  • Sum of Total Data Reduction Logical Used Without Snapshots can be seen as LOGICAL USED (9.13.1 or later) or CLIENT DATA (9.12.1 or earlier) on Cluster capacity in System Manager
  • System Manager does not display value that corresponds to Total Data Reduction Physical Used Without Snapshots

Additional Information

additionalInformation_text
NetApp provides no representations or warranties regarding the accuracy or reliability or serviceability of any information or recommendations provided in this publication or with respect to any results that may be obtained by the use of the information or observance of any recommendations provided herein. The information in this document is distributed AS IS and the use of this information or the implementation of any recommendations or techniques herein is a customer's responsibility and depends on the customer's ability to evaluate and integrate them into the customer's operational environment. This document and the information contained herein may be used solely in connection with the NetApp products discussed in this document.