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AWS S3 shows larger usage than seen from the ONTAP cluster

  1. Last updated
    Apr 22, 2025
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Category:
cloud-tiering
Specialty:
core
Last Updated:
4/22/2025, 8:13:15 PM

Applies to

ONTAP 9
Cloud Volumes ONTAP (CVO)
AWS
BlueXP Tiering

Issue

A tiered aggregate shows the following usage as seen from the ONTAP cluster:

Aggregate : AGGR1_S3_Tiered
S3Bucket
      Feature                                                 Used      Used%
      ---------------------------------------------      -------------      -----
      Logical Used                                             503TB       -
      Logical Referenced Capacity                              476TB       -
      Logical Unreferenced Capacity                           26.7TB       -
      Space Saved by Storage Efficiency                       34.2TB       -

      Total Physical Used                                      468TB       -

 
From the AWS portal, there is a significant additional usage in the attached object store that can not be seen in any manner from ONTAP:
 
 
clipboard_e1788f5d27dc788fb0837a902fdd2a425.png
 
The observed difference was noted as 727.6TB (AWS view) - 468TB (ONTAP view) = 259.6TB of unaccounted for usage in the AWS S3 bucket.

 

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