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Why is vol0 showing high number of IOPS?

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838
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Category:
ontap-9
Specialty:
perf
Last Updated:

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Applies to

  • ONTAP 9
  • Data ONTAP 8
  • vol0 (node root volume)
  • High IOPS

Answer

  • Internal ONTAP processes cause high IOPS on vol0
  • It is considered normal behavior

Additional Information

  • It is usually safe to ignore in most circumstances as this should have no performance impact to user workloads
  • Engineering has stated that this is normal, expected, and if observed no fix is needed in most circumstances
  • 806862 High IOPS Observed on Root Volume/Aggregate
  • A couple other causes are listed in these two bugs:
    • 726693 High input output operations per second (iops/s) of type other_iops seen on volume vol0
    • 830749 High input output operations per second (iops/s) of type other_iops seen on volume vol0

 

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