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Unified Manager reports Aggregate is Overcommitted, How to verify in ONTAP

Last Updated:

Applies to

  • ONTAP 9.1 and later
  • OnCommand Unified Manager
  • OnCommand Insight
  • Active IQ Unified Manager


  • Unified Manager notification received.

Risk          - Aggregate Overcommitted
Impact Area   - Protection
Severity      - Error
State         - New
Source        - Fas8200-01: AGG_01
Cluster Name  - Fas8200
Cluster FQDN  -
Trigger Condition - The overcommitted threshold set at 100% is breached. 121.07 TB (222.49%) of 54.42 TB is committed. 32.39 TB (59.52%) is used.
Description   - This alert will trigger when the aggregate has had more space allocated to volumes than the amount of usable space in the aggregate (or is close to using more space)

  • To calculate over commitment;
    • Type DP volumes consider volume total size
    • Type RW volumes consider Maximum Autosize (If -autosize-mode is off, use the total volume size)


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