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Active IQ Unified Manager Alert: Node Disk Fragmentation Warning Threshold Breached

Last Updated:

Applies to

  • OnCommand Unified Manager (OCUM)
  • Active IQ Unified Manager (AIQUM)
  • ONTAP 9
  • SnapMirror


  • OnCommand Unified Manager has been rebranded to Active IQ Unified Manager as of the 9.6RC1 (and later) releases
  • For the purposes of this document, Unified Manager will be referred to as ActiveIQ Unified Manager (AIQUM)


  • Active IQ Unified Manager reports node disk fragmentation warning alerts in the volumes in the cluster
  • However, performing a reallocate measure displays a very low fragmentation (level 1 or 2).


From: "Active IQ Unified Manager" <>
Date: Jul 4, 2017 6:01 AM
Subject: Performance Alert - 1 new warning system-defined threshold(s) breached on Cluster cluster1
To: "Storage Admins" <>

 Warning System-defined Threshold Event

Trigger Time:  5:39 am, 4 Jul EDT
Description:  1 new warning system-defined threshold(s) breached on Cluster cluster1


Policy Name: Node disk fragmentation
       A WARNING event has been triggered on node1 based on the detection of high node utilization caused by high
       percentage of delayed disk write on node1_aggr_sas1.




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