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Why is ‘Thin-Provisioned Volume Space At Risk’ event in UM seen with volume provisioned capacity being a short percentage of the available space of the host aggregate?

Last Updated:

Applies to

  • OnCommand Unified Manager 9.5 (UM)
  • Thin provisioned volumes with auto grow enabled


  • The aggregate is overcommited and
  • Available Capacity of the Aggregate / Max(Volumes growth rate) is less than 7 days. 

Additional Information

  • The event is triggered for all thin provisioned volumes of the aggregate, that have not crossed the nearly full threshold.
  • UM expects that the aggregate will become full within 7 days, if the growth rate for the volumes in the aggregate is high.


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